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Byju's Answer

Standard VIII

Mathematics

Total Surface Area of a Cuboid

State whether...

Question

State whether true or false.
A wall 9 m long, 6 m high and 20 cm thick, is to be constructed using bricks of dimensions 30 cm, 15 cm and 10 cm. The number of bricks will be required are 2400.

True

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False

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Solution

The correct option is A True
Volume of wall = lbh
= 900 $\times$ 600 $\times$ 20
= 10800000 $c m^{3}$

Volume of brick = lbh
= 30 $\times$ 15 $\times$ 10
= 4500 $c m^{3}$

No. of bricks = $\frac{10800000}{4500}$

$\Rightarrow 2400$

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State whether true or false.A wall 9 m long, 6 m high and 20 cm thick, is to be constructed using bricks of dimensions 30 cm, 15 cm and 10 cm. The number of bricks will be required are 2400.

The correct option is A TrueVolume of wall = lbh = 900×600×20 = 10800000 cm3Volume of brick = lbh = 30×15×10 = 4500 cm3No. of bricks = 108000004500 ⇒2400

State whether true or false.
A wall 9 m long, 6 m high and 20 cm thick, is to be constructed using bricks of dimensions 30 cm, 15 cm and 10 cm. The number of bricks will be required are 2400.

The correct option is A True
Volume of wall = lbh
= 900 $\times$ 600 $\times$ 20
= 10800000 $c m^{3}$

Volume of brick = lbh
= 30 $\times$ 15 $\times$ 10
= 4500 $c m^{3}$

No. of bricks = $\frac{10800000}{4500}$

$\Rightarrow 2400$