Problema Solution

Billy uses 64ft of fencing material to build a rectangular fence around his garden. If the width of the fence is 12ft, what is the length?

Answer provided by our tutors

let


l = the length, l>o


w = 12 ft the width


Billy uses 64ft of fencing material to build a rectangular fence around his garden means the perimeter of the rectangular fence is 64 ft:


2(l + w) = 64


plug w = 12 into the last equation:


2(l + 12) = 64


by solving we find:


l = 20 ft


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the length is 20 feet.