The sugar sweet company will choose from to companies to transport it sugar market too. The first company charges $4500 to rent trucks plus an additional fee of $150.25 for each ton of sugar the second company charges $2990 to rent trucks plus an additional fee of $225.75 for each ton of sugar

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?