Question

derive the formula TSA of frustum of cone​

Answer 1

Answer:

pie l (R1+R2) this is the formula

Answer 2

Answer:

π ( R1+ R2 ) this is formula

Step-by-step explanation:

frustum of a right circular come

r=Radius of upper base

R= Radius of lower base

S= short hight

volume 1/3 πh(r2+rh+R2)

lateral surface area=π(r+R)s

=π(r+R)√(R-r2)+ h2

total surface area=π(r+R)s+πr2+πr2

=π(r+R)√(R-r2) +h2+ πr2+πR2