A rectangular cake has a length of 13 1/2 inches and a width of 9 inches. How many whole, square pieces of cake with side lengths of 2 1/4 inches can be cut from the cake?

Let’s find the area of the rectangular cake and the square pieces.

I’m going to turn the fractions into decimals since it’s easier for me.

13.5•9

121.5

Now find the area of the square pieces.

2.25•2.25

5.0625

Now divide the area of the cake by the pieces to find how many can fit.

121.5/5.0625

24

So, 24 square pieces can be cut out of the rectangular cake.