Question

A tent is in the form of a cylinder whose height is 5m surmounted by a cone of equal base. The diameter of base is 105m.The slant height of cone is 60m.Find the cost of cloth at rs 15 per.sq metre to make the tent.

Answer 1

$\green{hola}$

given:-
H=5m
L=60m
R=D/2
R=105/2m

to find cost of cloth at rate if =15 rs per m²

Cost=Area×15/-

Area=2πrh
=2×22/7×105/2×5
=22/7×105×5
=22×525/7
=22×75
=1650 m²

Cost=1650×15
${\pink{\bold{\boxed{Cost=24750\:/-}}}}$