Question

jaunita and samuel are planning a pizza party they order a rectangular sheet Pizza that measures 21 inches by 36 inches they tell the pizza maker not to cut it because they want to cut it themselves all pieces of pizza must be square with none left over what is the side length of the largest Square pieces into which Juanita and Samuel can cut the pizza

Answer 1

To find out the answer to this, you need to find the greatest common factor of 21 and 36. To find that, make factor trees of both numbers and multiply the numbers that appear in both of them together.
21's factors are: 3 and 7
36's factors are: 3, 3, 2, and 2
They have only one 3 in common, so the GCF is 3, and therefore the largest side length of the squares.