The circumference of a circular piece of land is $440$ metres. Find its area in term of hectares.

1.54

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77

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35.5

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740

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Solution

The correct option is B $1.54$
2πr = 440m => r = 70m
Therefore area is π×r×r = (22 × 70 × 70)/7 = 15400 square meter = 1.54 hectares

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