New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Exercise>Q 24

HARD

7th ICSE

IMPORTANT

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Two cubes each of volume $512 {c m}^{3}$ are joined end to end. The surface area of the resulting cuboid is $k {cm}^{2}$ . Find the value of $k$ .

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Important Questions on Volume and Surface Area of Solids

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New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Exercise>Q 25

If the areas of three adjacent faces of a cuboid are

x, y, z

respectively, then the volume of the cuboid is

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New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Exercise>Q 26

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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New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Mental Maths>Q 1

If the volume of a cuboid whose dimensions are

18 cm \times 10 cm \times 8 cm

is

V {cm}^{3}

then find

V

.

EASY

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IMPORTANT

New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Mental Maths>Q 2

If the volume of cube of edge

6 cm

is

V {cm}^{3}

then find

V

.

EASY

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IMPORTANT

New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Mental Maths>Q 3

If the surface area of cube of side

8 cm

is

k {cm}^{2}

, then find the value of

k

.

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New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Mental Maths>Q 4

If the volume of a cube is

729 {cm}^{3}

,find its surface area (excluding units).

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New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Mental Maths>Q 5

A rectangular oil tank is

5 m

high,

3 m

long and

2 m

wide.How many litres of oil can it hold?

[G i v e n 1 m^{3} = 1000 litres]

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New Mathematics Today Class 7>Chapter 32 - Volume and Surface Area of Solids>Challenge !>Q 1

Each side of a cube is $3$ units. It is cut into cubes each of side $1$ unit. If the total surface area of all the smaller cube thus obtained is $k$ square units. Find the value of $k$