Question

The capacity of closed cylinder is 141.3 cubic centimeter. Its height is 5 cm. Therefor find its (a) radius (b) total surface

Answer 1

Let radius be r
$capacity \: \: \pi {r}^{2} h = 141.3 \\ {r}^{2} = \frac{141.3}{\pi \times 5} = 9 \\ r = 3 \: cm \\ \\ total \: surface \: area \\ = 2\pi rh + 2\pi {r}^{2} \\ = 2\pi \times 3 \times 5 + 2\pi \times {3}^{2} \\ = 48\pi = 150.8 \: {cm}^{2}$

Answer 2

Your answer !!

Refer to the attachment !!

___________________________