Question

Find the total surface area of a cylinder if the radius of its base is 5 cm and height is 40 cm.

Answer 1

Radius of the cylinder, r = 5 cm

Height of the cylinder, h = 40 cm

∴ Total surface area of cylinder, S = $2\mathrm{\pi }r\left(r+h\right)=2\times 3.14\times 5\times \left(5+40\right)=2\times 3.14\times 5\times 45$ = 1413 cm²

Thus, the total surface area of cylinder is 1413 cm².