Problema Solution
The perimeter of a rectangle is 128 in. The width of the rectangle is 4y in. Find the length of the rectangle in term of y
Answer provided by our tutors
let
w = 4y in the width of the rectangle
l = the length of the rectangle
The perimeter of a rectangle is 128 in:
2(l + w) = 128
2(l + 2y) = 128
by solving for l we find:
l = 64 - 2y
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the length of the rectangle in terms of y is: 64 - 2y in.