The surface area of a sphere is 7.84π ft.^2 What is the radius of this sphere?
The formula for the surface area of a sphere is given by:
Surface Area = 4πr^2
where r is the radius of the sphere.
Given that the surface area is 7.84π ft.^2, we can set up the equation as follows:
7.84π = 4πr^2
Dividing both sides of the equation by 4π, we get:
r^2 = 7.84/4
r^2 = 1.96
Taking the square root of both sides, we get:
r = √(1.96)
r ≈ 1.4 ft.
Therefore, the radius of the sphere is approximately 1.4 ft.