Question

Please solve the fast

Answer 1

the area of conical curve= πrl
where,
$l = \sqrt{ {r}^{2} + {h}^{2} }$
given, h=5m and r=d/2 = 12m

so,
$\sqrt{ {5}^{2} + {12}^{2} } = 13m$
so, area of conical curve= π × 12×13 m^2
= 3432/7 m^2

so, required cost= (area of conical curve)×(rate per unit area)

therefore, = 3432/7 × 14
=₹6864