71.19 divide by 6.3 I need help pleas or else I get have credit and who wants half credit right

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.

Give all possible names for the line shown. calculation tip: lines can be written with either point first.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'