an electrician has wires of the same length made from the same material the electrical resistance R ohms of a wire is inversely proportional to the square of its radius r mm when r=2 R=0.9 express Rin terms of r

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32