1.

If `A=2h(l+b`), then b=____A. `2Ah-1`B. `((A)/(2h))-1`C. `2A l-h`D. `(A)/(2l)-h`

Answer» Correct Answer - B
Given `A=2h(l+b)`
`rArr (A)/(2h)=l+b`
`rArr (A)/(2h)-l=b`
`rArr b=((A)/(2h))-1`


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