An animal shelter has 24 puppies. if the puppies are 32% of the total dog and cat population, how many dogs and cats are in the animal shelter?

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?