3. The formula to find the surface area of a sphere is to take the radius of the sphere and square it and multiply that amount by pi and then multiply that by 4. This is written algebraically as S=4πr 2, where S is the surface area, r is the radius, and the value of π is 3.14. Rewrite the equation to solve for the radius of the sphere if you know the sphere's surface area. Then estimate the radius of a sphere given a surface area of 500 meters2.

Question

Maxim Burton

Mathematics

7 November, 03:30

3. The formula to find the surface area of a sphere is to take the radius of the sphere and square it and multiply that amount by pi and then multiply that by 4. This is written algebraically as S=4πr 2, where S is the surface area, r is the radius, and the value of π is 3.14. Rewrite the equation to solve for the radius of the sphere if you know the sphere's surface area. Then estimate the radius of a sphere given a surface area of 500 meters2.

+2

Answers (1)

Know the Answer?

Steven Barr · Answer 1

The way to get the equation for the radius (r) is to get r by itself. So divide each side by 4pi

500/4pi=r^2

Now take the square root of each side to get the equation of r.

sqrt (500/4pi) = r