What is the surface area of a cylinder with a radius of 9 inches and a height of 20 inches?
+4473 The surface area of a cylinder is: 2pi*r^2 + 2pi*r*h.
We just need to plug in r = 9 and h = 20 -->
Surface area = 2pi*(9^2) + 2pi*9*20 -->
(2*pi*81) + (2*pi*9*20) = 1639.9113651738720705 square inches.
+4473 The surface area of a cylinder is: 2pi*r^2 + 2pi*r*h.
We just need to plug in r = 9 and h = 20 -->
Surface area = 2pi*(9^2) + 2pi*9*20 -->
(2*pi*81) + (2*pi*9*20) = 1639.9113651738720705 square inches.
