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 cubic meters. Find the breadth of the wall.	Pick.
A) 40cm  B) 30cm  C) 20cm  D) 10cm  E) None of these
Let the breadth of the wall be x metres.   Then, Height = 5x metres and Length = 40x metres.   x * 5x * 40x = 12.8   =&gt; x3 = 12.8/200 = 128/2000 = 64/1000   =&gt; x = 4/10 m   =&gt; x = (4/10) × 100 = 40 cm   40cmnswer: 40cm
<result>A</result>
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 cubic meters. Find the breadth of the wall.