START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 15

MEDIUM

8th CBSE

IMPORTANT

Earn 100

A piece of copper of volume $4.4 {dm}^{3}$ is drawn into a cylindrical wire $0.025 cm$ in diameter. Find the length of the wire.

Important Questions on Mensuration-II (Solid Figures)

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 16

The diameter of a cylindrical tank is

24.5 m

and depth is

8 m

. How many metric tons of water will it hold? [

1 m^{3}

of water weighs

1, 000 kg

and

1 metric ton = 1, 000 kg

]

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 17

A hollow cylindrical lube, open at both ends is made of

2 cm

thick iron. If the external diameter is

50 cm

and the length of the tube is

140 cm

, find the volume of iron in it. Find the weight of the tube, if

1 {cm}^{3}

of metal weighs

8 g

.

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 18

A rectangular sheet of paper

35 cm \times 21 cm

can be transformed into the curved surface of a right circular cylinder in two ways, i.e., either by rolling the paper along its length or along its breadth. Find the ratio of the volumes of the two cylinders thus formed.

EASY

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>REVIEW EXERCISES>Q 1

The volume of a cube whose edge is

3 x

is:

EASY

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>REVIEW EXERCISES>Q 2

The maximum length of a rod that can be kept on a cuboidal box of dimension

12 cm \times 9 cm \times 8 cm

is:

EASY

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>REVIEW EXERCISES>Q 3

The lateral surface area of a cuboid of dimension $11 cm \times 8 cm \times 5 cm$ is:

EASY

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>REVIEW EXERCISES>Q 4

The sum of the area of all six faces of a cuboid is the ___________ of the cuboid.

EASY

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>REVIEW EXERCISES>Q 5

The volume of an oil tank is

4 m^{3}

. Its capacity in litres is: