Question

Brian is creating a collage on a piece of cardboard that has an area of 120r2 square centimeters. The collage is covered entirely by pieces of paper that do not overlap. Each piece has an area of square centimeters. Use the given information to determine an expression for the total number of pieces of paper used.

Answer 1

Each piece has an area of square centimeters.

You need a number or a variable to do this problem. But let's say each piece of paper had an area of r square cm's. Then the number of pieces is
\( \frac{120 r^2}{r}= 120 r\)