Question

Maria wants to find the surface area of a steel rod that is in the shape of a right circular cylinder. The diameter is 0.50 inches, and the length is 36 inches. What is the surface area? Use 3.14 for π
.(1 point)

114.61 inches2


56.52 inches2


0.39 inches2


56.91 inches2

Answer 1

Surface area of a cylinder = 2πr(h + r). Here r = 0.50/2 = 0.25 in, h = 36 in, π = 3.14.

2πr(h + r) = 2(3.14)(0.25)(36 + 0.25) = 1.57(36.25) = 56.9125 ≈ 56.91 in^2.

Answer: 56.91 inches^2.