A right rectangular prism has these dimensions: Length: Fraction 1 and 1 over 4 units
Width: Fraction 5 over 8 unit
Height: Fraction 3 over 4 unit

How many unit cubes of side length Fraction 1 over 8 unit are required to pack the prism without any gap or overlap?

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?