Question

A medicine capsule is in the shape of acylinder with two hemispheres stuck to each of its ends. The length of the entire capsule is 14 mm and the diameter of the capsule is 5 mm. Find its surface area.

Answer 1

here,`h+2r=14`
h =`14-5= 9`mm
total surface area = surface of sphere + surface of cylinder
`= 4 pi r^2 + 2 pi rh`
`= 4 pi(5/2)^2 + 2 pi (5/2)`
`=2 pi(25/4 + 5/2*9)`
`= 70* 22/7 =220 mm^2`
answer