SOLUTION: a girl makes a rectangle with a perimeter of 54cm the length is twice the width calculate the area of her rectangle

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Question 960759: a girl makes a rectangle with a perimeter of 54cm the length is twice the width calculate the area of her rectangle
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
W=width; L=length=2W; P=perimeter=54 cm
P=2(L+W) Substitute for L.
54cm=2(2W+W) Divide each side by 2.
27cm=3W Divide each side by 3.
9cm=W The width is 9cm.
L=2W=2(9cm)=18cm The length is 18cm.
Area=L*W
Area=(18cm)(9cm)
Area=162 sq cm ANSWER: The area is 162 square centimeters.