SOLUTION: the sides of a rectangle are in the ratio 5:7 and the perimeter of the rectangle is 96cm. What is the area of the rectangle?

SOLUTION: the sides of a rectangle are in the ratio 5:7 and the perimeter of the rectangle is 96cm. What is the area of the rectangle?

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Question 260447: the sides of a rectangle are in the ratio 5:7 and the perimeter of the rectangle is 96cm. What is the area of the rectangle?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
5N+7N=12N
2*5N+2*7N=96
10N+14N=96
24N=96
N=96/24
N=4 ANS. FOR THE MULTIPLIER
5*4=20 ANS. FOR ONE SIDE
7*4=28 ANS. FOR THE OTHER SIDE
PROOF
2*20+2*28=96
40+56=96
96=96
20*28=560 cm^2 is the area.
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