## What is a Cylinder?

A cylinder is a three-dimensional shape with two circular faces, a curved base, and a curved top. It is symmetrical around its central axis. The length of the cylinder is determined by the distance between the two circular faces. The radius of the circular faces is determined by the diameter of the circular faces. The volume of a cylinder is calculated by multiplying the area of the circular face by the height of the cylinder.

## What is a Sphere?

A sphere is a three-dimensional shape with a curved surface. It is symmetrical around its central axis. The radius of the sphere is determined by the diameter of the sphere. The volume of a sphere is calculated by multiplying the area of the surface by 4/3.

## The Relationship between a Cylinder and a Sphere

The volume of a cylinder is equal to the volume of a sphere with the same radius and height. This is because the area of the circular face of the cylinder is the same as the area of the surface of the sphere. Therefore, if a cylinder and a sphere have the same radius and height, they will have the same volume.

## How to Calculate the Volume of a Cylinder

To calculate the volume of a cylinder, you need to know the radius and height of the cylinder. The formula for calculating the volume of a cylinder is V = πr2h, where r is the radius of the cylinder and h is the height of the cylinder. To calculate the volume of a cylinder, you need to first calculate the area of the circular face of the cylinder using the formula A = πr2. Then, multiply the area by the height of the cylinder to get the volume.

## How to Calculate the Volume of a Sphere

To calculate the volume of a sphere, you need to know the radius of the sphere. The formula for calculating the volume of a sphere is V = 4/3πr3. To calculate the volume of a sphere, you need to first calculate the area of the surface of the sphere using the formula A = 4πr2. Then, multiply the area by 4/3 to get the volume.

## Conclusion

The cylinder and the sphere below have the same volume if they have the same radius and height. This is because the volume of a cylinder is equal to the volume of a sphere with the same radius and height. To calculate the volume of a cylinder or a sphere, you need to know the radius and in the case of the cylinder the height, and then use the appropriate formula to calculate the volume.

### Frequently Asked Questions

#### Q1: What is the difference between a cylinder and a sphere?

A cylinder is a three-dimensional shape with two circular faces, a curved base, and a curved top. A sphere is a three-dimensional shape with a curved surface. The radius of the cylinder is determined by the diameter of the circular faces, whereas the radius of the sphere is determined by the diameter of the sphere.

#### Q2: How do you calculate the volume of a cylinder?

To calculate the volume of a cylinder, you need to know the radius and height of the cylinder. The formula for calculating the volume of a cylinder is V = πr2h, where r is the radius of the cylinder and h is the height of the cylinder. To calculate the volume of a cylinder, you need to first calculate the area of the circular face of the cylinder using the formula A = πr2. Then, multiply the area by the height of the cylinder to get the volume.

#### Q3: How do you calculate the volume of a sphere?

To calculate the volume of a sphere, you need to know the radius of the sphere. The formula for calculating the volume of a sphere is V = 4/3πr3. To calculate the volume of a sphere, you need to first calculate the area of the surface of the sphere using the formula A = 4πr2. Then, multiply the area by 4/3 to get the volume.

## References

MathIsFun. (2021). Cylinder. Retrieved from https://www.mathsisfun.com/geometry/cylinder.html

MathIsFun. (2021). Sphere. Retrieved from https://www.mathsisfun.com/geometry/sphere.html