Jacob is visiting argentina, and he hears a warning that the temperature may drop as low as -12.4°c. how cold is that in °f, to the nearest tenth? a. -54.9°f b. -22.3°f c. 9.1°f d. 35.3°f

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?