the school authorities decide to put a fence around their playground. if the playground is 135 metres long ang 75 metres wide, how much wire is needed to encircle it 3 times?
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Step-by-step explanation:
perimeter of playground=2(l+b)
2(125+75)
=2×200
=400
so, length of wire for encircle 3 times=400×3=1200
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