1.

The volume of a wall, 5 times as high as it is broad and 8 times as long as it is high, is 12.8 cu. metres. Find the breadth of the wall.

Answer»

Let the breadth of the wall be x metres. 

Then, Height = 5x metres and Length = 40x metres. 

x * 5x * 40x = 12.8 

x3 =12.8/200 = 128/2000 = 64/1000 

So, x = (4/10) m = ((4/10)*100)cm = 40 cm



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