Question

A toy was made by scooping out a
hemisphere from each end of a solid
cylinder. If the height of the cylinder
is h cm and base radius is r сms, find
the total surface area of the toy.​

Answer 1

Answer:

Given that,

A toy was made by scooping out a hemisphere from each end of a solid cylinder.

height of the cylinder (h)=h cm

radius of the base of the cylinder=r cm

Curved surface area of cylinder=2πrh cm²

Curved surface area of 2 hemispheres=2×2πr²

= 4πr² cm²

Total surface area=CSA of cylinder– CSA of 2 hemispheres

=2πrh–4πr²

=2πr(h–2r) cm²

I think it is correct.

Hope it works...............................™✌️

Saniya

Answer 2

total surface area of the toy may be 4/3πr3

h:πr2