Find the surface area of a sphere with a diameter of 30 inches. Leave your answer in terms of pi.
1. 3,600π in^2
2. 900π in^2
3. 2,826π in^2
4. 225π in^2
The formula for the surface area of a sphere is 4πr^2, where r is the radius of the sphere. Since the diameter is given as 30 inches, the radius is half of the diameter, which is 15 inches.
Plugging this value into the formula, we get:
Surface area = 4π(15^2)
Surface area = 4π(225)
Surface area = 900π in^2
Therefore, the surface area of the sphere is 900π square inches. The correct answer is 2. 900π in^2.