Question

the area of trapezium shaped field is 400 m square the distance between two parallel side is 15 M and one of the parallel side is 20 m find the other parallel side

Answer 1

$area = \frac{1}{2} (sum \: of \: two \: paralle \: sides) \times (distance \: between \: them) \\ =400 = \frac{1}{2} (20 + x)(15) \\ 53.34 - 20 = x \\ 33.34 = x \\ other \: side \: is \: 33.34$