The least common multiple can be found by prime factorization or simpy listing the factors! You must know what the least common multiple that goes into 9 and 12. Prime factorization of 9 and 12 is 3 so 3x2x2x3=36 Or you can list the factors 9: 9,18,24,36 12: 12,24,36 So the least common multiple is 36
LCM is found by finding the factors of both and making sure that both are inthere 9=3 times 3 12=2 times 2 times 3 common one is 3 so we have to have at least 2 threes and 2 twos 2 times 2 times 3 tiimes 3=36 answer is 36
The side lengths of the reflected square are equal to the original, and the distance from the axis(2) also remains the same. From there, it is just addition.