Give exact answer in terms of π where appropriate. The area of the circle A.

a) Find the radius of circle A
b) Find the length of arc BC.
c) Find the area of the shaded sector ​

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.