Cone cylinders and Spears unit test the surface area of a sphere is 7.84 pi ft to the power to what is the radius of the sphere
To find the radius of a sphere when given the surface area, we can use the formula for the surface area of a sphere which is:
Surface Area = 4πr^2
Given that the surface area is 7.84π ft^2, we can set up the equation:
7.84π = 4πr^2
Dividing both sides of the equation by 4π, we get:
r^2 = 7.84/4
Simplifying the right side gives:
r^2 = 1.96
Taking the square root of both sides gives:
r = √(1.96)
So the radius of the sphere is approximately 1.4 ft.