The surface area of a sphere is 7.847 ft.? What is the radius of this sphere?
The formula for the surface area of a sphere is given by:
Surface Area = 4πr^2
Given that the surface area is 7.847 ft^2, we can substitute this value into the formula:
7.847 = 4πr^2
Dividing both sides of the equation by 4π:
7.847 / (4π) = r^2
To find the radius, we take the square root of both sides:
r = √(7.847 / (4π))
Using a calculator to evaluate this expression:
r ≈ 0.559 ft
Therefore, the radius of the sphere is approximately 0.559 ft.