Question : The radius of the base of a Conical tent is 12 m. The tent is 9 m high. Find the cost of canvas required to make the tent, if one square metre of canvas costs Rs. 120. (Take $\pi$ =3.14)

Option 1: Rs. 67,830

Option 2: Rs. 67,800

Option 3: Rs. 67,820

Option 4: Rs. 67,824

Question : Aman wants to get his spherical overhead water tank having a diameter of 7 m, painted. If the cost of painting is Rs. 13 per square metre, find the cost of painting Aman's spherical overhead water tank.
(Use $\pi=\frac{22}{7}$)

Option 1: Rs. 1872

Option 2: Rs. 1984

Option 3: Rs. 2002

Option 4: Rs. 1926

Question : The dome of a residential tower is in the form of a hemisphere with a radius of 560 cm. Find the cost of painting it at the rate of Rs. 25 per m². (Take $\pi=\frac{22}{7}$)

Option 1: Rs. 4928

Option 2: Rs. 4982

Option 3: Rs. 4298

Option 4: Rs. 4289

Question : The diameter of the 120 cm long roller is 84 cm. It takes 500 complete revolutions of the roller to level the ground. The cost of levelling the ground at Rs. 1.50 per sq. m. is:

Option 1: Rs. 6,000

Option 2: Rs. 3,762

Option 3: Rs. 2,376

Option 4: Rs. 5,750

Question : If the average total cost is Rs. 54, the total fixed cost is Rs. 45,000 and the quantity produced is 2500 units, find the average variable costs (in Rs.) of the firm.

Option 1: 24

Option 2: 18

Option 3: 36

Option 4: 60

Question : The area of a circle whose radius is the diagonal of a square whose area is $4\;\mathrm{cm^2}$ is:

Option 1: $16\pi\;\mathrm{cm^2}$

Option 2: $4\pi\;\mathrm{cm^2}$

Option 3: $6\pi\;\mathrm{cm^2}$

Option 4: $8\pi\;\mathrm{cm^2}$