Using π = 3.14, find the curved surface area of a cylinder with radius 13 mm and height 66 mm.
Note
Curved surface area of a cylinder = 2πrh. So CSA = 2 × 3.14 × 13 × 66 = 5388.24 square mm. This excludes the two circular ends. Think of a cylinder as many equal circular layers stacked up. So we find the circular base area πr² and multiply by the height. The answer is in cubic units, so the correct choice is 5388.24 mm².