Question

if the area of a Trapezium is 28 metre and one of eight parallel side is 6 find the other parallel side if its altitude is 4 cm​

Answer 1

Let other side be x

$\frac{1}{2} (6 + x) \times 4 = 28 \\ = > 6 + x = \frac{28 \times 2}{4} \\ = > x = 14 - 6 \\ = > x = 8$