Hello everyone< i think i'm on the right track but now i'm stuck. Here is the problem: A concave shaving mirror has a radius of curvature of 37.0 cm. It is positioned so that the (upright) image of a man's face is 2.50 times the size of the face. How far is the mirror from the face? Here is my work and drawing: I'm conufsed on how i'm suppose to find the object distance if i'm not giving the image distance.