Least common multiple of 2 and 3?i forgot how to do this completly over the summer lol

Can someone check my answer? you : )

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base