<prompt> Ni eneo gani la trapezoid OBCD hapa chini? asyukubwa 200;defaultpenlinewidth0.8;xaxisx,-4,10;yaxisy,-3,5;nukta LeboO, alignSW,0,0;nuktaLeboD2,3,alignNW,2,3;nuktaLeboC4,3, alignNE,4,3;nuktaLeboB8,0, alignS,8,0;chora0,0--2,3--4,3--8,0;asy  <response>: Eneo la trapezoid ni fracb_1b_2h2. Trapezoid hii ina besi za 2 na 8 na urefu wa yuniti 3, kwa hivyo eneo ni frac283215 square units. 