Question

The height of a tent is 9m.Its base diameter is 24m.what is it's Slant height?find the cost of canvas cloth required if it cost 14Rs per. Sq.m

Answer 1

Answer:

Step-by-step explanation:

h=9m, d=24m , r=d/2=24/2=12m

since

slant height l= $l=\sqrt (h^{2} +r^{2} )$

so,

slant height l = $\sqrt{9^{2} +12^{2} } =\sqrt{225} =15m$

$surface area of cone = \pi*r*l$

$surface area of cone =\frac{22}{7} *12*15$

since

Cost of one meter square canvas = 14Rs

then

Cost = $\frac{22}{7} *12*15*14$=27720Rs.