Question

the volume of the space inside a right circular conical tent is 138*2/7 and its vertical height is 4 m.find the canvas required to make the tent and also find the canvas cost at the rate of Rs 120/m2

Answer 1

Answer:

Step-by-step explanation:

Plz see it down

Answer 2

Answer:

amount of canvas required to make tent = 47.14m²

total cost of canvas used for the tent = Rs 5656.8

Step-by-step explanation:

given, volume of conical tent = 138* 2/7

height = 4 m

radius = ?

volume of cone  = 1/3πr²h

⇒138 * 2/7 = 1/3 * 22/7* r² * 4

r²=  $\frac{138*2*7*3}{7*22*4}$= 9.4

r = √9.4 = 3.06

⇒radius of the tent = 3m approx

slant height of the tent = √(3² +4²) = 5m

curved surface area of the tent = πrl = $\frac{22}{7} * 3 * 5$ = 47.14 m²

amount of canvas requires = 47.14m²

canvas is used only on the curved surface area of the tent

cost of canvas = Rs 120/sq.m

total cost of canvas used for the tent = 47.14*120 = Rs 5656.8