Question

Find the height of a cylinder whose radius is 7 cm and the total surface area is 968 cm².

Answer 1

Let height of the cylinder = h, radius = r = 7cm

Total surface area = 2πr(h + r)

i.e., 2 × `22/7` × 7 × (7 + h) = 968

h = 15 cm

Hence, the height of the cylinder is 15 cm.