Question
The height of a wall is six times its width and the length of the wall is seven times its height .If volume of he wall be 16128 cu.m its width is :
Answer: Option A
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Let the width of the wall be `x` metres.
Then, Height = `(6x)` meres and length = `(42x)` metres.
`:.` ` 42x xx x xx 6x = 16128`
`hArr x^3 = ((16128)/(42 xx 6)) `
`hArr x^3 = 64`
`hArr x = 4.`
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