Question

find the volume csa and tsa of a cylinder whose height is 21 and ratio of 5cm​

Answer 1

Step-by-step explanation:

given

Radius of cylinder = 5 cm

hight of cylinder = 21 cm

$curved \: surface \: area = 2\pi\: rh \\ csa = 2 \times \frac{22}{7} \: \times 5 \times 21 \\ \\ = 660 \: {cm}^{2}$

$total \: surface \: area \: = 2\pi \: r(r + h) \\ \\ = 2 \times \frac{22}{7} \times 5(5 + 21) \\ \\ = \frac{220}{7} \times 26 \\ \\ = 817.14 \: \: \: {cm}^{2}$

Required Ans

Answer 2

Answer:

See the attachment.

Step-by-step explanation: