3. A wall is to be built using bricks of dimensions 20 cm x 16 cm x 8 cm. How many hai
be required if the wall is 10 m long, 5 m high and 64 cm thick?
4. A water tank is 160 cm long and 45 cm deep. Find the width of the tank if it container
tonna cm
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Answer:
Step-by-step explanation:
Dimensions of wall= 10m×5m×0.64m
Volume =10×5×0.64
=32m^3
Dimensions of brick=0.20m×0.16m×0.08m
=0.00256 m^3
Bricks required = 32m^3÷0.00256m^3
=12500 bricks
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