Question

area of a frustum formula​

Answer 1

I hope this will help you

Answer 2

Answer:

Formula for frustum of cone is deviated as follows:

Volume:

=【1/3πH (R2 +Rr+r2 )】

Curved surface area and total surface area :

The curved surface area of the frustum of the cone = π(R+r)l1

The total surface area of the frustum of the cone = π l1 (R+r) +πR2 +πr2

The slant height (l1) in both the cases shall be = √[H2 +(R-r)2]

¡ hope it will helps u friend