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gregori [183]
3 years ago
9

A rectangle's width is one-fifth it's length, and it's perimeter is 180m. Find the dimensions of the rectangle. The length is M

and the width is m
Mathematics
2 answers:
Jobisdone [24]3 years ago
7 0
P = 2(L + W)
P = 180
W = 1/5L

180 = 2(L + 1/5L)
180 = 2(6/5L)
180 = 12/5L
180 / (12/5) = L
180 * 5/12 = L
75 = L <=== length is 75m

W = 1/5L
W = 1/5(75)
W = 75/5
W = 15 <=== width is 15m
Darina [25.2K]3 years ago
3 0
12L=720 
L=720/12 
L=60 ANS. FOR THE LENGTH. 
W=60/5=12 ANS. FOR THE WIDTH. 
Evidence: 
144=2*60+2*12 
144=120+24 
144=144
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