Please help me with this question

If eh = hg and hg=16, find the diameter of k

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Atriangle has verticals at b(-3,0), c(2,-1), d(-1,2). which transformation would produce an image with verticals b”(-2,1), c”(3,2), d”(0,-1)?