Question

write a formula to find curved surface area of the frustum of a cone whose radii is r1 and r2 slant height is l​

Answer 1

Answer:

The Curved Surface Area (CSA) of the frustum of a cone is: = pi * l(R + r) where the (r) stands for = radius of the smaller circle and (R) stands for = radius of the bigger circle and the (l) = slant height of the frustum.

Answer 2

Answer:

$\pi \: l \: (r1 + r2)$

curved surfaces area .

thank you.