How is the graph of the parent function of y=^3sqrtx transformed to produce the graph y=^3sqrt1/2x?

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.

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.