baseball player got 102 hits in the last 300 times at bat. Explain how you would find the percent of times the baseball player got a hit out of the number of times at bat.

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?