A right cylinder has a diameter of 10 inches and a height of 15.inches What's the surface of the cylinder.
The TWO ends = TWO x pi r^2 = 2 * pi * 5^2 = 50 pi
The outside = pi * d * h = pi *10 *15 = 150 pi
Total surface area (add them up) 150 pi + 50 pi = 200 pi = 628.32 sq in