High School Math : Geometry

Study concepts, example questions & explanations for High School Math

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Example Questions

Example Question #7 : How To Find The Volume Of A Cylinder

What is the volume of a cylinder with a circular side with a radius of  and a length of ?

Possible Answers:

Correct answer:

Explanation:

To find the volume of a cylinder we must know the equation for the volume of a cylinder which is

In this example the length is  and the radius is  so our equation will look like this 

We then square the  to get 

Then perform multiplication to get 

The answer is .

Example Question #11 : Cylinders

The volume of a cylinder is  units cubed. If the cylinder's height is  units, what is its radius?

Possible Answers:

 units

 units

 units

 units

Correct answer:

 units

Explanation:

The formula for the volume of a cylinder is , where  is volume,  is the radius of the cylinder, and  is its height. Substituing the given information into this equation makes it possible to find the radius by solving for :

 units

Example Question #651 : Geometry

This figure is a right cylinder with radius of 2 m and a height of 10 m.Cylinder

What is the volume of the right cylinder (m3)?

Possible Answers:

Correct answer:

Explanation:

The formula for the volume of a right cylinder is  where  is the radius and  is the height.  Thus for this problem 

Example Question #21 : Cylinders

What is the volume of a cylinder with a radius of and a height of ?

Possible Answers:

Correct answer:

Explanation:

When thinking of a 3D figure, think of it as a stack of something. In this case, a cylinder is a stack of a circles.

The volume will be the area of that base circle times the height of the cylinder. Mathematically that would be .

Plug in our given values and solve.

Example Question #117 : Solid Geometry

Find the volume of a cylinder given that its height and radius are 4 and 11, respectively. 

Possible Answers:

Correct answer:

Explanation:

The standard equation to find the volume of a cylinder is 

where  denotes height and  denotes radius.

Plug in the given values for height and radius to find the volume of the cylinder:

Example Question #118 : Solid Geometry

Find the volume of the following cylinder.

Cylinder

Possible Answers:

Correct answer:

Explanation:

The formula for the volume of a cylinder is:

where  is the radius of the base and  is the length of the height.

 

Plugging in our values, we get:

Example Question #1971 : High School Math

Find the volume of the following cylinder.

Cylinder

Possible Answers:

Correct answer:

Explanation:

The formula for the volume of a cylinder is:

Where  is the radius of the base and  is the height of the cylinder

 

Plugging in our values, we get:

Example Question #22 : Cylinders

Find the volume of the following partial cylinder.

Cylinder_sector

Possible Answers:

Correct answer:

Explanation:

The formula for the volume of a partial cylinder is:

Where  is the radius of the cylinder,  is the height of the cylinder, and  is the degrees of the sector.

 

Plugging in our values, we get:

Example Question #21 : Cylinders

Find the volume of the following partial cylinder.

Partial_cylinder

Possible Answers:

Correct answer:

Explanation:

The formula for the volume of a partial cylinder is:

where  is the radius of the cylinder,  is the height of the cylinder, and  is the degrees of the sector.

 

Plugging in our values, we get:

Example Question #1 : How To Find The Volume Of A Cylinder

If a cylinder has a radius, \small r, of 2 inches and a height, \small h, of 5 inches, what is the total surface area of the cylinder?

Possible Answers:

\small 18\pi

\small 28\pi

\small 70\pi

\small 36\pi

\small 24\pi

Correct answer:

\small 28\pi

Explanation:

The total surface area will be equal to the area of the two bases added to the area of the outer surface of the cylinder. If "unwrapped" the area of the outer surface is simply a rectangle with the height of the cylinder and a base equal to the circumference of the cylinder base. We can use these relationships to find a formula for the total area of the cylinder.

Use the given radius and height to solve for the final area.

\small 2\pi(2)^{2} + 2\pi (2)(5)

\small 8\pi + 20\pi

\small 28\pi

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