In this lesson, we learn how to find the volume and total surface area of a sphere. The total surface area is the distance all around a sphere and is calculated by taking four times pi multiplied by the radius squared. The volume is all the air that makes up the sphere and is found by taking four thirds pi times the radius cubed. It's important to keep answers in terms of pi to keep them exact since pi is irrational and goes on forever.
Finding the volume and surface area of a sphere
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Questions answered by this video:
How do I find the total surface area of a sphere?
How do I find the volume of a sphere?
What is the surface area of a sphere with a radius of 4?
What is the volume of a sphere with a radius of 4?
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In this lesson, the teacher shows how to find the surface area and the volume of a sphere.