Find the circumference and area of a circle with a diameter of 22 inches. leave your answers in terms of pi.

a. c = 11π; a = 44π
b. c = 22π; a = 44π
c. c = 11π; a = 121π
d. c = 22π; a = 121π

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'