Each sentence shows the number of pages a student reads in a book and the amount of time it takes to read those pages. How many pages can the students read in one hour if they continue to read at these rates? Drag a number into the box to show each student's unit rate.
Not all numbers will be used.

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?