Question

given hieght 8m base radius 6m extra length 20cm ( approx ) find cloth used

Answer 1

al
$8 \times 6 \times 0.2 =0.96$

Answer 2

Height of conical tent (h) = 8m

Radius of base of tent (r) = 6m

Slant height (l) =√r^2+h^2=√(8)^2+(6)^2=√100=10m

CSA of conical tent=πrl

(3.14×6×10)m^2
188.4m^2


Let the length of tarpaulin sheet require be L 

As 200 m will be wasted, So effective length will be (L - 0.2 m)

(L×0.2×3)m =188.40m^2
L-0.2m=6.28m
L=63m

Thus, the length of the tarpaulin sheet will be = 163 m.