## Q- The ratio of height of a circular solid cylinder and length of Radius of base 3 : 1 if the volume of the cylinder is 1029 π cubic centimetre what will be the total surface area of the cylinder ?

Chapter: Right Circular Cylinder

## Q- If the height of two right circular cylinder are in the ratio 3:4 and perimeter are in the ratio 1:2 then find the ratio of their volume?

Chapter: Right Circular Cylinder

## Q- It is required to make a plastering of sand and cement with 3.5 cm thick, surrounding four cylindrical pillars, each of whose diameter is 17.5cm. (i) If each pillar is of 3 meter height, let us write by calculating how many cubic dcm of plaster materials will be needed. (ii) If the ratio of sand and cement in the plaster material be 4:1, let us write how many cubic dcm of cement will be needed.

Chapter: Right Circular Cylinder

## Q- The length of outer and inner diameter of hollow right circular cylinder are 16cm and 12cm respectively. Height of Cylinder is 36cm. let us calculate how many solid cylinders of 2cm diameter and 6cm length may be often by melting this cylinder.

Chapter: Right Circular Cylinder

## Q- Height of a hollow right circular cylinder, open at both ends, is 2.8 meter. If length of inner diameter of the cylinder is 4.6 dcm and the cylinder is made up of 84.48 cubic dcm of iron, let us calculate the length of outer diameter of the cylinder.

Chapter: Right Circular Cylinder

## Q- Height of a right circular cylinder is twice of its radius. If the height would be 6 times of its radius then the volume of the cylinder would be greater by 539 cubic dcm, let us write by calculating the height of the cylinder.

Chapter: Right Circular Cylinder

## Q- Curved surface area of a right circular cylindrical log of wood of uniform density is 440 sq dcm. If 1 cubic dcm of wood weight 1.5 kg and weight of the log is 9.24 quintals. Let us write by calculating the length of diameter of log and its height.

Chapter: Right Circular Cylinder

## Q- The length of inner and outer diameter of a right circular cylindrical pipe open at two ends are 30 cm and 26 cm respectively and length of pipe is 14.7 meter. Let us write by calculating the cost of painting its all surfaces with coaltar at ₹2.25 per square dcm.

Chapter: Right Circular Cylinder