SOLUTION: below is a rectangle. if the perimeter is 36m, what is area, b (x+1)m, l(x+5)m

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Question 1081027: below is a rectangle. if the perimeter is 36m, what is area, b (x+1)m, l(x+5)m
Answer by amfagge92(93) About Me  (Show Source):
You can put this solution on YOUR website!
2(l+b) --Perimeter of rectangle
b=x+1 l=x+5
⇒2%28x%2B1%2Bx%2B5%29=36
⇒4x+12=36
x=6
∴ area of the rectangle
=l*b=11*7=77m^2
check:Perimeter=2(7+11)=36m