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How Many Bricks Will Be Required for Constructing a Wall Which is 16 M Long, 3 M High, and 22.5 Cm Thick, If Each Brick Measures 25 Cm X 11.25 Cm X 6 Cm? - Mathematics

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Sum

How many bricks will be required for constructing a wall which is 16 m long, 3 m high, and 22.5 cm thick, if each brick measures 25 cm x 11.25 cm x 6 cm?

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Solution

Length of the wall = 16 m = 16 x 100 cm = 1600 cm

Height of the wall = 3 m = 3 x 100 cm = 300 cm

Breadth of the wall = 22.5 cm

Volume of the wall = 1600 x 300 x 22.5 cm3 = 1,08,00,000 cm3

Volume of one brick = 25 x 11.25 x 6 cm3 = 1687.5 cm3

Number of bricks required to construct the wall = `"Volume of wall"/"Volume of one brick"`

= `(1,08,00,000)/1687.5 = 6400`

Concept: Surface Area of a Cube
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 21 Surface Area, Volume and Capacity
Exercise 21 (E) | Q 2 | Page 244
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