Question

in a cylinder radius is doubled and height is halved then CSA WILL be​

Answer 1

Step-by-step explanation:

curved surface area of cylinder=2πrh

radius=2r height=h/2

then

$csa = 2 \times \frac{22}{7} \times 2r \times \frac{h}{2}$

CSA= 44rh/7 or 2πrh