Question

A tent is in the form of a cylinder whose height is surmounted by a cone of equal base . The diameter of base is 105 m . The slant height of cone is 50m . Find the cost of cloth at rs. 15 per sq metre to make the tent.

Answer 1

Answer:Given:

Cylinder

h = 5m

Cone

d = 105m

r = 105/2

l = 50m

r of cone = r of cylinder

To find : CSA of the tent + cost

CSA of tent = CSA of cylinfer + CSA of cone

Proof : CSA of cylinder =2*22/7*105/2*5

                                    22*75

                               1650m²

CSA of cone = πrl

                    22/7*150/2*50

                   550*15

                   8250m²

CSA of tent = CSA of cylinfer + CSA of cone

                         1650+8250=9900m²

cost=15*9900

148500