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Correct option is D)

$∴$ Perimeter $=2πr=2×722 ×117 m=4m$

Thus the wheel covers 4 meters in one revolution i.e. $40$ meters in $10$ revolutions Hence the distance of meter is covers in one minute i.e. $2400$meter in $40$ minutes i.e. $2.4$ km in one hour

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