Asked by Matthew

A rectangle's length is 8 cm more than three times it's width. If the perimeter is 128 cm, find the length and width. What is the equation for this?

Answers

Answered by drwls
You need to sove two simultaneous equations.

L = length W = width

L = 3W + 8
2(L + W) = 128

Substitute 3W +8 for L in the last equation.
2[(3W+8)+ 2W] = 128
8W + 16 = 128
8W = 112
W = ?
L = 3W +8 = ?
Answered by DrBob222
L + L + W + W = 128
L - 8 = 3W
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Two equations. Two unknowns. Solve simultaneously.
Answered by hello
3 and 8
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