Question

the area of trapezium is 12 sq.m. if its height be it's 3 m, find the sum of its parallel side

Answer 1

Refer to the above attachment !

Answer 2

$Given: \: \: \: Area \: of \: trapezium \: = 12 {cm}^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: height = 3m \: \\ \\ Area \: of \: trapezium \: = \frac{1}{2} \times sum \: of \: parallel \: sides \times height \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 12cm \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{2} \times sum \: of \: a \: parallel \: sides \times 3 \\ \\ = > 12cm = \frac{3}{2} \times sum \: of \: a \: parallel \: sides \: \\ \\ = > \frac{2 \times 12}{3} = sum \: of \: a \: parallel \: sides \\ \\ = > 8 \: {cm}^{2} = sum \: of \: a \: parallel \: sides \: \: \: \: \: \: \: (Answer)$