Intermediate Geometry : How to find the volume of a cylinder

Study concepts, example questions & explanations for Intermediate Geometry

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Example Questions

Example Question #21 : How To Find The Volume Of A Cylinder

Find the volume of a cylinder that has a radius of \(\displaystyle \frac{1}{5}\) and a height of \(\displaystyle \frac{2}{3}\).

Possible Answers:

\(\displaystyle \frac{1}{25}\pi\)

\(\displaystyle \frac{1}{75}\pi\)

\(\displaystyle \frac{2}{75}\pi\)

\(\displaystyle \frac{4}{75}\pi\)

Correct answer:

\(\displaystyle \frac{2}{75}\pi\)

Explanation:

Recall how to find the volume of a cylinder:

\(\displaystyle \text{Volume of Cylinder}=\text{Area of base}\times\text{height}\)

Since the base of a cylinder is a circle, we can write the following equation:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Substitute in the given values to find the volume.

\(\displaystyle \text{Volume of Cylinder}=\pi\times (\frac{1}{5})^2\times \frac{2}{3}\)

Solve.

\(\displaystyle \text{Volume of Cylinder}=\frac{2}{75}\pi\)

Example Question #41 : Cylinders

A cylinder has a smaller cylinder cut out of its core as shown by the figure below.

 

1

Find the volume of the figure.

Possible Answers:

\(\displaystyle 1425.32\)

\(\displaystyle 1507.96\)

\(\displaystyle 1607.55\)

\(\displaystyle 1236.98\)

Correct answer:

\(\displaystyle 1507.96\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 7^2 \times 12=588\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 3^2 \times 12=108\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=588\pi-108\pi=480\pi=1507.96\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

Example Question #41 : Cylinders

Find the volume of the figure.

2

Possible Answers:

\(\displaystyle 3369.61\)

\(\displaystyle 3020.18\)

\(\displaystyle 3209.58\)

\(\displaystyle 3166.73\)

Correct answer:

\(\displaystyle 3166.73\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 10^2 \times 12=1200\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 4^2 \times 12=192\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=1200\pi-192\pi=1008\pi=3166.73\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

Example Question #21 : How To Find The Volume Of A Cylinder

Find the volume of the figure.

3

Possible Answers:

\(\displaystyle 30005.82\)

\(\displaystyle 29907.96\)

\(\displaystyle 28800.64\)

\(\displaystyle 29632.23\)

Correct answer:

\(\displaystyle 29907.96\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 21^2 \times 35=15435\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 13^2 \times 35=5915\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=15435\pi-5915\pi=9520\pi=29907.96\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

Example Question #44 : Cylinders

Find the volume of the figure.

4

Possible Answers:

\(\displaystyle 26551.22\)

\(\displaystyle 21635.08\)

\(\displaystyle 27159.63\)

\(\displaystyle 26389.38\)

Correct answer:

\(\displaystyle 26389.38\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 20^2 \times 25=10000\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 8^2 \times 25=1600\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=10000\pi-1600\pi=8400\pi=26389.38\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

Example Question #21 : How To Find The Volume Of A Cylinder

Find the volume of the figure.

5

Possible Answers:

\(\displaystyle 15966.32\)

\(\displaystyle 14844.03\)

\(\displaystyle 15633.08\)

\(\displaystyle 13222.07\)

Correct answer:

\(\displaystyle 14844.03\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 15^2 \times 25=5625\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 6^2 \times 25=900\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=5625\pi-900\pi=4725\pi=14844.03\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

Example Question #162 : Solid Geometry

The figure below represents a cylinder with a smaller cylinder removed from its middle.

 

Find the volume of the figure.

6

Possible Answers:

\(\displaystyle 1850.36\)

\(\displaystyle 1865.32\)

\(\displaystyle 1884.96\)

\(\displaystyle 1896.77\)

Correct answer:

\(\displaystyle 1884.96\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 8^2 \times 10=640\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 2^2 \times 10=40\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=640\pi-40\pi=600\pi=1884.96\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

Example Question #851 : Sat Mathematics

Find the volume of the figure.

7

Possible Answers:

\(\displaystyle 2036.33\)

\(\displaystyle 2073.45\)

\(\displaystyle 2158.25\)

\(\displaystyle 2200.94\)

Correct answer:

\(\displaystyle 2073.45\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 8^2 \times 12=768\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 3^2 \times 12=108\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=768\pi-108\pi=660\pi=2073.45\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

Example Question #113 : Solid Geometry

Find the volume of the figure.

8

Possible Answers:

\(\displaystyle 1006.37\)

\(\displaystyle 1225.22\)

\(\displaystyle 1109.87\)

\(\displaystyle 1206.37\)

Correct answer:

\(\displaystyle 1206.37\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 6^2 \times 12=432\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 2^2 \times 12=48\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=432\pi-48\pi=384\pi=1206.37\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

Example Question #29 : How To Find The Volume Of A Cylinder

Find the volume of the figure.

9

Possible Answers:

\(\displaystyle 1099.56\)

\(\displaystyle 1124.52\)

\(\displaystyle 1025.86\)

\(\displaystyle 1233.45\)

Correct answer:

\(\displaystyle 1099.56\)

Explanation:

13

In order to find the volume of the figure, we will first need to find the volume of both cylinders.

Recall how to find the volume of the cylinder:

\(\displaystyle \text{Volume of Cylinder}=\pi\times\text{radius}^2\times\text{height}\)

Now, use the given radius and height to find the volume of the larger cylinder.

\(\displaystyle \text{Volume of Larger Cylinder}=\pi\times 6^2 \times 10=360\pi\)

Next, use the given radius and height to find the volume of the smaller cylinder.

\(\displaystyle \text{Volume of Smaller Cylinder}=\pi\times 1^2 \times 10=10\pi\)

Subtract the volume of the smaller cylinder from the volume of the larger one to find the volume of the figure.

\(\displaystyle \text{Volume of Figure}=360\pi-10\pi=350\pi=1099.56\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

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