pepentitcakasya pepentitcakasya

24-11-2016
Mathematics

contestada

The area of a rectangular wall of a barn is 140 square feet. Its length is 6 feet longer than twice its width. Find the length and width of the wall of the barn.

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Nirina7 Nirina7

26-11-2016

Area= A = L x w=140
L=6 x (2w)= 12w
so 12w² =140, w²= 11.66 implies w= 3.41, and L= 12*3.41 =40.9

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