Find the area of the rhombus. Each indicated distance is half the length of it’s respective diagonal. (image included)

The highest common factor of 132 and 220

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30