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Q.
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. meters. Find the breadth of the wall.
A.
40cm
B.
30cm
C.
20cm
D.
10cm
View Answer
Correct choice: A
Explanation:
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 => x = 4/10 m => x = (4/10)*100 = 40 cm
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