What is the length of each side ? help please

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?

If a suspect is in possession of 20 grams of cocaine how many ounces does he possess what will the charge be

Which situation is an example of an observational study?