Question

The height of a circular cylinder is 2 cm and radius of its base is 7 cm. Then, the total surface area of the cylinder will be (in centimetre square) ___

Answer 1

Here, h = 20 cm

r = 7 cm

Total surface area of the cylinder = $2\pi r(h+r)$

$=2\times \pi \times 7(20+7)c{m}^2$

$=2\times \frac{22}{7}\times 7\left(27\right)c{m}^2$

$=1188c{m}^2.$