Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 25

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IMPORTANT

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A rectangular marble stone $28 cm$ wide and $5 cm$ thick weighs $112 kg$ . If 1 cubic cm of marble weighs $25 gm$ , then the length of given stone is :

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Important Questions on Volume and Surface Area

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IMPORTANT

Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 28

A cuboidal water tank contains

216

litres of water. Its depth is

\frac{1}{3}

of its length and breadth is

\frac{1}{2}

of

\frac{1}{3}

of the difference between length and depth. The length of the tank is:

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Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 34

The volume of a cuboid is twice that of a cube. If the dimensions of the cuboid are

(9 m \times 8 m \times 6 m)

, the total surface area of the cube is

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IMPORTANT

Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 38

A metal sheet

27 cm

long,

8 cm

broad and

1 cm

thick is melted into a cube. The difference between the surface areas of two solids will be:

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IMPORTANT

Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 26

An iron beam is

8 m

long,

60 cm

wide and

35 cm

high. If

1

cubic metre of iron weighs

50 kg

, what is the weight of the beam?

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Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 30

The surface area of a cube is

1176 {cm}^{2}

. The volume of the cube is :

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IMPORTANT

Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 35

The length of diagonal of a cube is

4 \sqrt{3} cm

. Its volume is:

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Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 36

The length of each edge of three cubes are

6 cm, 8 cm

and

10 cm

respectively. These are melted and moulded into a new cube. Each edge of the new cube measures:

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IMPORTANT

Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 37

When water is turned into ice its volume increases by

10 %

. If ice is melted into water, then its volume will decrease by