3-D figure questions for tier-2------------part-iii

knowledge philic presents....

3-D figure questions for tier-2

advance maths for tier-2

with a view to crack cgl, we are continuously sharing important questions that is the same question which asked in the previous year exams to solve it and optimize your chance to become inspector

let's start

part-3

3-D figure questions for tier-2

Kp- 13: A godown building is in the form as shown in the figure given below. The vertical cross-section parallel to the width side of the building is a rectangle 7 m × 3 m, mounted by a semi-circle of radius 3.5 m. The inner measurements of the cubical portion of the building are 10 m × 7 m × 3 m. Find the volume

of the godown and the total interior surface area excluding the floor (base).

(Take pi = 22/7)

Kp-14: A cylinder is within the cube touching all the vertical faces. A cone is inside the cylinder. If their heights are same with the same base, find the ratio of their volumes?

Kp-15: The length of an edge of a cube is 24 cm. It is cut by a plane into a pyramid in such a way that its three coterminous edges remain half of their original length. Find the volume of the pyramid?

Kp-16: An iron pillar has some part in the form of a right circular cylinder and remaining in the form of a right circular cone. The radius of the base of each of cone and cylinder is 8 cm. The cylindrical part is 240 cm high and the conical part is 36 cm high. Find the weight of the pillar if one cubic cm

of iron weighs 7.8 grams.

Kp-17: A circus tent is cylindrical upto a height of 3 m and conical above it. If the diameter of the base is 105 m and the slant height of the conical part is 53 m, find the total canvas used in making the tent.

Kp-18: A tent is of the shape of a right circular cylinder upto a height of 3 metres and then becomes a right circular cone with a maximum height of 13.5 metres above the ground. Calculate the cost of painting the inner side of the tent at the rate of Rs 2 per square metre, if the radius of the base is 14 metres.

Kp-19: The interior of a building is in the form of a right circular cylinder of diameter 4.2 m and height 4 m surmounted by a cone. The vertical height of cone is 2.1 m. Find the outer surface area and volume of the building.

Kp-20: The interior of a building is in the form of cylinder of diameter 4.3 m and height 3.8 m, surmounted by a cone whose vertical angle is a right angle. Find the area of the surface and the volume of the building.

(Take  = 22/7)