Question

___ cm is the height of a cylinder whose radius is 14 cm and the total surface area is 2640 sq.cm

Answer 1

Given, the radius (r) is 14cm.
Let h be the height of the cylinder.

Total surface area of cylinder = 2 π r² + 2 π r h

2640 = 2 x $\frac{22}{7}$ x (14)² + 2 x $\frac{22}{7}$ x(14) h .

Hence, h = 16 cm.