## Q- The external diameter of a conical-coronet made off thermocol is 21cm in length. To wrap up the outer surface of the coronet with foil, the expenditure will be ₹ 57.75 at the rate of 10p per m2. Let us write by calculating, the height and slant height of the coronet.

Chapter: Right Circular Cone

## Q- A heap of wheat is in the shape of a right circular cone, its base diameter is 9m and height is 3.5m Let us determine the total volume of wheat. Let us calculate the minimum quantity of plastic sheet to be required to cover up this heap of wheat [suppose π = 3.14]

Chapter: Right Circular Cone

## Q- The length of the base diameter of a wooden toy of conical shape is 10cm. the expenditure for polishing whole surfaces of the toy at the rate of ₹ 2.10 per m is ₹ 429. Let us calculate the height of the toy. Let us also determine the quantity of wood that is required to make the toy.

Chapter: Right Circular Cone

## Q- The quantity of iron sheet to make a boya of right circular conical shape is 75 3/7 m sq. If the slant height of it is 5cm, then let us write, by calculating, the volume of air in the boya and its height. Let us determine the expenditure to color the whole surface of the boy a at the rate of ₹ 2.80 per m. the width of the iron-sheet not to be considered while calculating.

Chapter: Right Circular Cone

## Q- In a right circular conical tent 11 person can stay. For each person 4m space and the base and 20 cm air are necessary. Let us determine the height of the tent put up exactly for 11 persons.

Chapter: Right Circular Cone

## Q- If the volume of a right circular cone is 100 π cm2 and height is 12cm, then let us write by calculating, the slant height of the cone.

Chapter: Right Circular Cone

## Q- The diameter of the base area of a right circular cone is 21m and height is 14m. Let us calculate the expenditure to color the curved surface at the rate of ₹ 1.50 per sq m.

Chapter: Right Circular Cone

## Q- 77 sq m triple is required to make a right circular conical tent. If the slant height of the tent is 7 m, then let us write by calculating, the base area of the tent.

Chapter: Right Circular Cone