4. emily has a springer spaniel that weighs 48.5 pounds. she also has a
cocker spaniel that weighs 27.8 pounds less than the springer spaniel.
how many pounds does the cocker spaniel weigh?
xet

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?