Acylindrical water tank is being filled with a hose. the depth of the water increases by 114 ft per hour. how many hours will it take for the water level in the tank to be 312 ft deep? enter your answer as a mixed number in simplest form in the box.

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?