Question

a conical tent is 10 M high and the radius of its base is 24 M (1) find slant height of the (2) cost of canvas required to make the tent, if the cost of 1 m sq canvas is rupees 70.

Answer 1

It is given that
Radius =24m.
Height =10m.
Now by using PGT you get
Slant height(l)= 26m
Now
Curved surface area of the conical tent=paiRL=(22*24*26/7)m2
Cost of canvas required =70*22*26*24/7= Rs 13780

Answer 2

H=10m
R=24m
L=26m (by pythagoras theorem)
CSA Of cone=pi*R*L
=22/7*24*26=13728/7sq m
cost of 1 sq m=70
cost of 13728/7 sq m=13728/7×70= Rs 137280