Question

a solid cone of radius r and height h is placed over a solid right circular cylinder having same base, radius and height as that of the cone. find total surface area of combined solid.​

Answer 1

Step-by-step explanation:

TSA of new solid = CSA of Cone + CSA of cylinder + Base area of cylinder

TSA of solid =πrl+2πrh+πr²

TSA of solid =πr(l+2h+r)

TSA of solid =πr( √r²+h² +2h+r)

hope its useful