Question

S.A of frustum
volume of frustum
T.S.A of frustum

Answer 1

SA = πl(R1+R2)
volume= 1/3 πh(r1×r1+r1r2+r2×r2)
T.S.A= πR1×R1+πR2×R2+πR3×R3+r1

Answer 2

CSA of frustum is π[r1+r2]
TSA a frustum isπ( R1 + R2) + r1 square +r 2 square