Exercise

Author:S.N. Chhibber

S.N. Chhibber Mathematics Solutions for Exercise

Simple step-by-step solutions to Exercise questions of Surface Area and Volume of Solids from Joy Of Mathematics 8. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from Exercise with Hints & Solutions

EASY
8th CBSE
IMPORTANT

3.08 cubic meters of copper is drawn into a wire of radius 1.4 cm. Find the length of wire (in km) so formed.

MEDIUM
8th CBSE
IMPORTANT

The ratio of the curved surface area to the total surface area of right circular cylinder is 3:5. Find the ratio of the height to the radius of the cylinder.

MEDIUM
8th CBSE
IMPORTANT

The radii of two cylinders are in the ratio 2:3 and their heights are in the ratio 9:4. Calculate the ratio of their volumes.

MEDIUM
8th CBSE
IMPORTANT

A hollow cylindrical pipe is 35 m long. Its outer and inner diameters are 16 cm and 14 cm respectively. Find the volume of metal (in m3) used in making the pipe.

HARD
8th CBSE
IMPORTANT

A well of radius 7 m is dug to a depth of 12 m. Earth taken out of it has been evenly spread all around to form a circular embankment of width 7 m. iF the height of the embankment is k meter then k=

HARD
8th CBSE
IMPORTANT

A well of radius 175 cm is dug of 20 m. How many cubic meters of earth are dug out? Find the cost of plastering the internal curved surface at20 per sq. m.

MEDIUM
8th CBSE
IMPORTANT

A pencil consists of a cylinder of wood with solid cylinder of graphite filled into it. The diameter of pencil is 8 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the graphite in mm3.

HARD
8th CBSE
IMPORTANT

A pencil consists of a cylinder of wood with solid cylinder of graphite filled into it. The diameter of pencil is 8 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of wood in mm3