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प्रश्न
A game requires its players to run around a square playground. Each side of the playground is 20 m long. One player took 5 rounds around the playground. How many metres did he run altogether?
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उत्तर
The perimeter of a square
= 4 × length of one side
= 4 × 20
= 80 m
In one round 80 m.
So in 5 round = 80 × 5 = 400
= 400 m
∴ He runs altogether = 400 m.
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