4) area of figure = bh = 8x10 = 80 same as a trapezoid have base 6 and 14 and height 8 because A of trapezoid = 1/2(6+14)*8 = 80 so answer is C a trapezoid with bases of 6 mm and 14 mm and a height of 8 mm
5) area of original figure A = bh = 8 x 10 = 80 if double h = 16 and b = 20 then A = 16 x 20 = 320 the area is quadrupled.
