Given the circle below with secants start overline, O, P, Q, end overline OPQ and start overline, S, R, Q, end overline SRQ . If S, Q, equals, 45, comma, S, R, equals, 15SQ=45,SR=15 and P, Q, equals, 29PQ=29, find the length of start overline, O, P, end overline OP . Round to the nearest tenth if necessary.