A rectangular board measures 126 cm by 90 cm it can be divided into squares of equal size. Find the least number of squares the game board can be divided into.
a square has the same width and height, so find the gcd of 90 and 126. Here are there factors: 90:1,2,3,5,9,10,15,18,30,45,90 126:2,3,6, 7,9,14,18,21,42,63,126 18 is the largest in both so the number of squares will be 90/18 * 126/18 = 5*7 = 35
