If the circumference of the circular base of a cylinder is doubled, how does the volume of the cylinder change? a) the volume doubled. b) the volume tripled. c) the volume quadrupled. d) the volume is eight times larger.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

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