Question

the formula for the surface area of a sphere is a 4πr^2. where r is the length of the radius. Find the surface area of a sphere with the radius of 14 feet. use 22/7 for π

Answer 1

`r=14\ ft`

Put the value of r to the formula of an area of a sphere:

`A=4\pi r^2\to A=4\pi\cdot14^2=4\pi\cdot196=784\pi\ ft^2\approx784\cdot(22)/(7)=2464\ ft^2`

Answer 2

616 inches

Explanation: