Given that f(x)=x2+2x +3 and g(x)=x+4/3, solve for f(g(x)) when x=2

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

Can someone answer this question? : )

Find the area of the regular hexagon if a side is 20 cm.