The circumference of the wheels of a truck is | vedclass

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Question

(C) Distance covered in one rotation $= 440 \, cm$.Distance covered in $250$ rotations $= 440 	imes 250 \, cm$.Since the wheel makes $250$ rotations

Vedclass · Accepted Answer

$66$

Vedclass · Answer

(C) Distance covered in one rotation $= 440 \, cm$.Distance covered in $250$ rotations $= 440 	imes 250 \, cm$.Since the wheel makes $250$ rotations per minute,the distance covered in $1$ minute is $440 	imes 250 \, cm$.Distance covered in $1$ hour ($60$ minutes) $= 440 	imes 250 	imes 60 \, cm$.To convert this distance into kilometers,we divide by $100$ (to convert $cm$ to $m$) and then by $1000$ (to convert $m$ to $km$):Distance in $km = \frac{440 	imes 250 	imes 60}{100 	imes 1000} \, km$.$= \frac{6,600,000}{100,000} \, km = 66 \, km$.Therefore,the speed of the truck is $66 \, km/h$.

The circumference of the wheels of a truck is $440 \, cm$. They make $250$ rotations per minute. Then,the speed of the truck is $\ldots \ldots \ldots \ldots \, km/h$.

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