Question

Rajat wants to cover the window space of his room with bricks if the window is 1.5m long 2.5m high and 20cm thick and each brick measures 25cm by 12cm by 10cm then find the required number of bricks required to cover the space​
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Answer 1

Answer:

250

Step-by-step explanation:

No. of bricks required will be =

$\frac{volume \: of \: window}{volume \: of \: one \: brick}$

Volume of window = 1.5×2.5×0.2 ( 20 cm is 0.2 m )

Volume of window = 0.75m^3

Volume of brick = 0.25×0.12×0.1

Volume of brick = 0.003m^3

Hence

No. of bricks required=

$\frac{0.75}{0.003}$

= 250 bricks will be required

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Answer 2

Answer:

No. of bricks required will be =

\frac{volume \: of \: window}{volume \: of \: one \: brick}

volumeofonebrick

volumeofwindow

Volume of window = 1.5×2.5×0.2 ( 20 cm is 0.2 m )

Volume of window = 0.75m^3

Volume of brick = 0.25×0.12×0.1

Volume of brick = 0.003m^3

Hence

No. of bricks required=

\frac{0.75}{0.003}

0.003

0.75

= 250 bricks will be required