All ISEE Upper Level Math Resources
Example Questions
Example Question #1 : How To Find The Volume Of A Cylinder
Find the volume of a cylinder with the following measurements:
- diameter = 8cm
- height = 5cm
To find the volume of a cylinder, we will use the following formula:
where r is the radius and h is the height of the cylinder.
Now, we know the diameter of the cylinder is 8cm. We know that the diameter is two times the radius. Therefore, the radius is 4cm.
We also know the height of the cylinder is 5cm.
Knowing this, we can substitute into the formula.
Example Question #1 : Cylinders
Find the volume of a cylinder with a diameter of 8in and a height of 7in.
To find the volume of a cylinder, we will use the following formula:
where r is the radius and h is the height of the cylinder.
Now, we know the diameter of the cylinder is 8in. We also know the diameter is two times the radius. Therefore, the radius is 4in.
We also know the height of the cylinder is 7in.
Knowing all of this, we can substitute into the formula. We get
Example Question #2 : Cylinders
Find the volume of a cylinder with a diameter of 14in and a height of 12in.
To find the volume of a cylinder, we will use the following formula:
where r is the radius, and h is the height of the cylinder.
Now, we know the diameter of the cylinder is 14in. We also know the diameter is two times the radius. Therefore, the radius is 7in.
We know the height of the cylinder is 12in.
Knowing all of this, we can substitute into the formula. We get
Example Question #3 : Cylinders
Your family owns a farm with a silo for storing grain. If the silo is 40 feet tall and 15 feet in diameter, what volume of grain can it hold?
Your family owns a farm with a silo for storing grain. If the silo is 40 feet tall and 15 feet in diameter, what volume of grain can it hold?
Begin with the formula for volume of a cylinder.
A cylinder is just a circle with height.
So, we know the height is 40 ft, but what is r?
If you said 15, you would be on track to get the problem wrong. That is because the diameter is 15 ft, so our radius is only 7.5 ft.
Plug these in to get our answer:
Our answer should be
Example Question #5 : How To Find The Volume Of A Cylinder
Let
Find the volume of a cylinder with a diameter of 12cm and a height of 7cm.
To find the volume of a cylinder, we will use the following formula:
where r is the radius and h is the height of the cylinder.
Now, we know the diameter is 12cm. We know that the diameter is two times the radius. Therefore, the radius is 6cm.
We know the height of the cylinder is 7cm.
We know that .
Knowing all of this, we can substitute into the formula. We get
Example Question #431 : Geometry
You have a tennis ball canister which is cylindrical. If the radius of the cylinder is 3.5 cm, and the height is 21 cm, what is the volume of the canister?
You have a tennis ball canister which is cylindrical. If the radius of the cylinder is 3.5 cm, and the height is 21 cm, what is the volume of the canister?
Begin with the formula for volume of a cylinder:
Where r is our radius and h is our height.
Note that the formula is just the formula for the area of a circle times the height, because a cylinder is really just a circle with height.
Now, plug in what we know and solve for V
So our answer is:
Example Question #111 : Solid Geometry
A cylinder has the following measurements:
Height: 6in
Diameter: 16in
Find the volume.
To find the volume of a cylinder, we will use the following formula:
where r is the radius and h is the height of the cylinder.
Now, we know the diameter of the cylinder is 16in. We also know the diameter is two times the radius. Therefore, the radius is 8in.
We also know the height of the cylinder is 6in.
Knowing all of this, we can substitute into the formula. We get
Example Question #112 : Solid Geometry
A cylinder has the following measurements:
Height: 12in
Diameter: 10in
Find the volume.
To find the volume of a cylinder, we will use the following formula:
where r is the radius, and h is the height of the cylinder.
Now, we know the diameter of the cylinder is 10in. We also know the diameter is two times the radius. Therefore, the radius is 5in.
We know the height of the cylinder is 12in.
Knowing all of this, we can substitute into the formula. We get
Example Question #113 : Solid Geometry
Find the volume of a cylinder with a height of 9in and a radius of 8in.
To find the volume of a cylinder, we will use the following formula:
where r is the radius and h is the height of the cylinder.
Now, we know the radius of the cylinder is 8in and the height of the cylinder is 9in.
So, we get
Example Question #111 : Solid Geometry
For a cylinder, if the radius of the base is 4, and the height is 10, what is the volume?
Write the formula to find the volume of a cylinder.
Substitute the known dimensions.
Solve for the volume.
The answer is: