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 A = 4πr², where A is the surface area and r is the radius.
In this case, we are given A = 7.84π ft². Plugging this into the formula, we can solve for r:
7.84π = 4πr²
Dividing both sides of the equation by 4π, we get:
r² = 7.84/4
r² = 1.96
Taking the square root of both sides, we find:
r = √1.96 = 1.4
Therefore, the radius of the sphere is 1.4 feet.