## Elementary Geometry for College Students (6th Edition)

Lets take BC = b =12 h =AF = 5 Area of Parallelogram = bh = 12 * 5 =60 Now lets take DC = AB =7 =b h= AE A = 7*h As we know area of parallelogram is same 60 = 7*h h = $\frac{60}{7}$ = 8.6(approx)