Question

The slant height of conical tent is 12 metres and radius of the base is 7m . How many metres of canvas 2 metres in width is required to the tent ? Find the cost of canvas used at the rate of Rs 10 per metre .

Answer 1

$\bold\red{area \: of \: canvas \: = \: curved \: surface \: area \: = \pi \: r \: l}$

$= > \: \frac{22}{7} \times 7 \times 12 = {264cm}^{2} \\ = > \: width \: of \: canvas \: = 2m \\ = > length \: of \: canvas = \frac{264}{2} = 132 m \\ cost \: of \: canvas \: = rs \: 132 \times 10 \\ \boxed{ = rs1320}$

Answer 2

Answer:

the answer of this question is

rs= 1320