Circle
has a circumference of 367 cm.
What is the length of the radius, ?
O
6 cm
18 cm
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The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

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