Question

The perimeter of a trapezium is 104m,its non-parallel sides are18m and 22m,and it's altitude is 16m.find the area of a trapezium

Answer 1

$area \: of \: \: a \: trapezium = \\ \frac{1 }{2} \times sum \: of \: parallel \: sides \: \times distance \: between \: them$
$area = \frac{1}{2} \times (18 + 22) \times 16 \\ area = \frac{1}{2} \times 40 \times 16 \\ area = 320$
Hence area of the trapezium is 320m.