In ΔOPQ, the measure of ∠Q=90°, the measure of ∠O=40°, and QO = 3.1 feet. Find the length of PQ to the nearest tenth of a foot.

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0