Question

A wal 15 m long 30 cm wide and 4 m high is made of bricks, each measuring 22 cm long 12.5 cm 7.5 cm. If 1 /12 of the total volume of the wall consists of mortar, how many bricks are there in the wall??​

Answer 1

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Answer-:

Total number of bricks required is 8000.

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Given-:

Dimensions of the wall are :

Length (l) = 1500cm

width(w)= 30cm

Height (h) = 400cm

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Volume of the wall = (l*b*h)

→ (1500*30*400) cm²

→ (1500*12000) cm²

→ (180,00,000) cm²

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According to Question-:

Volume of the Mortar

Volume of the Mortar = 1/12 of volume of wall

→ 1/12*180,00,000

→ 15,00,000 cm²

Total volume of only wall excluding the volume of mortar = (Total volume of wall -volume of mortar)

→ (180,00,000 - 15,00,000) cm²

→ 165,00,000 cm²

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Now-:

Given dimensions of brick are :

length (L) = 22 cm

breath (b) = 12.5 cm

height (h) = 7.5 cm

Volume of bricks = (l*b*h)

→ (22*12.5*7.5) cm²

→ (2062.5) cm²

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Number of bricks = Volume of only wall/Volume of bricks

→ 165,00,000/2062.5

→ 8000

Therefore:-

Total number of bricks required is 8000.

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Answer 2

Answer:

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