Answer:
18 is the answer
Step-by-step explanation:
We know this because The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36
The factors of 54 are: 1, 2, 3, 6, 9, 18, 27, 54
Width: 3
Hight:3
explain, I made a block that was 4 blocks long then using the left over material i rearranged the blocks