Lower (5 2-3 2) = 4, so the height of the trapezoid is 4.
2 Let the width be x and the length be X+5.8.
(X+X+5.8)* 2 = 68.4 X = 14.2S = X *(X+5.8)= 14.2 * 20 = 284
3 let the bottom be x and the top be X+3.4.
(x+x+3.4) * 5.8/2 = 36.54x = 4.6cm.
4 is the waist, AB, CD, AD and BC are the upper and lower bottoms. Because the diagonals of AC and BD are equal, the quadrilateral ABCD is an isosceles trapezoid.