Convert 0.6 repeating into a fraction

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.

Use the graph of the sine function y=2sinθ shown below

What is the volume of a cone with a height of 6 cm in the radius of 2 cm