Question

A boiler is in the shape of cylinder with hemispherical ends. The total length of the boiler is 30m and its diameter is 12m. Find in terms of pie (i) its volume (ii) its surface area

Answer 1

Should I used pie r^2 ?

Answer 2

pir^2 is area of base of cilinder

Answer 3

multiplied by height you get the volume of cylinder but there is again the semisphere

Answer 4

so i get the base of the cylinder and then the hemispherical and add ?

Answer 5

do you know formula of volume of a sfhere ?

Answer 6

so this halfed you get volume of a hemisphere