Are the triangles similar? if they are, write a similarity statement and give the scale facter. give me a full answer i won't take half butt answers

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

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.

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)