A rectangular tank, 50 cm long and 30 cm wide, contains water upto a height of 9 cm A - Maths - Surface Areas and Volumes

Question

A rectangular tank, 50 cm long and 30 cm wide, contains water upto
a height of 9 cm A box of dimensions 25 cm × 25 cm × 20
cm is now placed in the tank so that its square face rests on the
bottom of the tank The quantity of water (in L) that must be poured
into the tank in order to just cover the box is

Rishabh Mittal · Accepted Answer

Dear Student ,
Please find below the solution to the asked query :

Volume of water in the tank initially =50×30×9=13500 cm3 
Box is placed so that its square face rests on the bottom of the tank 
So, to cover the box tank should be filled up to 20 cm
Volume of water in the tank =50×30×20=30000 cm3 
Volume of water displaced by box =25×25×20=12500 cm3 
Now ,Quantity of water must be poured in order to cover the box = 30000-13500-12500=30000-26000=4000 cm3 
=40001000=4 L 
     ANS
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