9. 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. How many bricks
will be required ?
Answers
Answer:
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Step-by-step explanation:
Given :-
Dimensions of wall :-
Length of the wall = 9 m = 9 x 100 cm = 900 cm
Height of the wall = 6 m = 6 x 100 cm = 600 cm
Breadth of the wall = 20 cm
Dimensions of Bricks :-
= 30 x 15 x 10 cm
Solution :-
Volume of the wall = 900 x 600 x 20 cm3 = 10800000 cm²
Volume of one Brick = 30 x 15 x 10 cm3 = 4500 cm³
Number of bricks required to construct the wall = volume of wall/volume of one brick = 10800000/4500 = 2400
Hence, 2400 bricks will be required.
Answer:
Area of wall with dimensions=900cm*600cm*20cm
=10800000cm^2
Area of the bricks=30cm*15cm*10cm
=4500cm^2
No. of bricks required=10800000/4500
=2400 bricks
Hence, 2400 bricks would be required to construct the wall.