Which best describes the meaning of the function notation g(y)? a. g is multiplied by y b. y is multiplied by g c. y is a function of g d. g is a function of y

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?