The side view of an attic is in the shape of an isosceles trapezoid, as shown in the diagram below. If the height of the attic is 9ft, Bc=12ft, and AD=28ft, Find the area of the isosceles trapezoid. SOMEONE PLEASE HELP ME OUT BRO PLEASE

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15