Solution: Height of conical tent, h = 8m Radius of base of tent, r = 6m Slant height of tent, l2 = (r2+h2) l2 = (62+82) = (36+64) = (100) or l = 10 Again, CSA of conical tent = πrl = (3.14×6×10) m2 = 188.4m2 Let the length of tarpaulin sheet required be L As 20 cm will be wasted, therefore, Effective length will be (L-0.2m). Breadth of tarpaulin = 3m (given) Area of sheet = CSA of tent [(L–0.2)×3] = 188.4 L-0.2 = 62.8 L = 63 Therefore, the length of the required tarpaulin sheet will be 63 m.