the length of a rectangle is three times its width if the perimeter is 84 metre find the length of the rectangle
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Answer:
2 l +2b is the perimeter of rectangle
so the half of 84 is 42
2x+x=42
3x=42
x=42/3
x=14
Step-by-step explanation:
so the length is 28 and breadth is 14
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