Question

A fish tank is 40 cm long 60 cm wide and 50 cm high it contains 50 litre of water how many litre more water must be added to fill the tank to the brim

Answer 1

Vol=l×b×h,vol=40×60×50,vol=120000cm cube,it contains 50L water,and 1L=1000cm cube so 120000/1000=120L Wter can be filled,and 50L already filled,so (120-50)L that is 70L can be filled
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