Question

a iron tank is 5m long, 3m Broad, 2m high. what is the weight of tank, if one cubic metre of the metal weighs 7.5 kg?

Answer 1

Volume=Length×Breadth×height
=(5×3×2)m3
=30 m3
(Given), 1 m3 weighs 7.5kg
therefore, weight of tank of volume 30m3
=(30×7.5)kg
=225 kg(Ans)

Answer 2

Length of the tank = 5m
Breadth = 3m
Height = 2m
Volume = l×b×h = 5×3×2 = 30m^3

1m^3 weights = 7.5 kg
30 m^3 will weigh = 7.5× 30 = 225kg

Hope it will help you