Question

what length of tarpaulin 3 m wide will be required to make a conical tent of height 8m and base radius 6m

Answer 1

as in a tent a cloth is spread only on the curved surface area which is πrl
l= √r² + h² 
 = √6²+8²  = √36+64 = √100 = 10m
∴l=10m
CSA = πrl
= 22/7 * 6*10
= 1320/7
=188.5 (approx) m
∴ 188.5 m of tarpaulin cloth is required.