12. The perimeter of a rectangle is 40m.The length of the rectangle is 4m less than 5 times its breadth.
Find the length of the rectangle.
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Answer:
L= 16 b=4
Step-by-step explanation:
L=5b-4
2 (l+b)=40
L+b=20
5b-4+b=20
6b=24
B=4
L=16
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