At track practice, Sean ran 4 and 2/8 miles on Monday and 2 and 3/8 miles on Tuesday. If his goal is to run a total of 10 miles by the end of track practice on Wednesday, how many more miles does he need to run? 5 and 10/8 miles 3 and 3/8 miles 15 and 10/8 miles 4 miles

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?