The surface area of a sphere is 7.84π ft.2 What is the radius of this sphere?(1 point)
__ft
The formula for the surface area of a sphere is:
A = 4πr^2
Given that the surface area is 7.84π ft^2, we can set up the equation:
7.84π = 4πr^2
Divide both sides by 4π:
7.84π / 4π = r^2
Simplify:
1.96 = r^2
To find the radius, we take the square root of both sides:
√1.96 = r
The approximate value of the square root of 1.96 is 1.4.
Therefore, the radius of this sphere is 1.4 ft.