What is the formula if the speed is missing? *A. s=t/dB. s=d/tC. s=t+dD. s=d x tFind the area of a trapezoid with bases of 4cm and 6cm, height of 5cm? *A. 120 sq.cmB. 60 sq.cm.C. 50 sq.cm.D. 25 sq.cm.