What is the length of a rectangle whose perimeter is 64cm long if the length is 3 times the width
Andrew M.
answered • 11/13/17
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
Perimeter = 2(length + width)
P = 2(L+w)
We are told the length is 3 times the width...
L = 3w
64 = 2(3w + w)
64 = 2(4w)
64 = 8w
8 = w
L = 3w = 3(8) = 24 cm
Length is 24 cm
width is 8 cm
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