A wall of thickness 10cm and height 5m has to be built across a play ground of length 15m. How many bricks are needed to construct the wall, if each brick has dimensions of 20cm x 10cm x 5cm?

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Solution

Volume of the wall across play ground is nothing but a cuboid.

Therefore, Volume of the wall = lbh= 1500 x10 x 500 $c m^{3}$

Now, each brick is a cuboid with length = 20 cm, breadth = 10 cm and height = 5 cm

So, volume of each brick = length × breadth × height

= $1000 c m^{3}$

So, number of bricks required = ( $\frac{v o l u m e o f t h e w a l l}{v o l u m e o f e a c h b r i c k}$ ) =7500

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A wall of thickness $10 c m$ and height $5 m$ has to be built across a play ground of length $15 m$ . How many bricks are needed to construct the wall, if each brick has dimensions of $20 c m \times 10 c m \times 5 c m .$ ?
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