Angle A corresponds to angle ?

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.

What is the slope of the line (-7,2) (4,6)

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great