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Answered by
1
Answer:
480 m
Step-by-step explanation:
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Answered by
1
Answer:
120m
Step-by-step explanation:
length=3(breadth)
perimeter=2(l+b)
perimeter=2(3b+b)
320=2(4b)
4b=320/2
4b=160
b=160/4
b=40
3b=3(40)=120 m
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