Question

the area of a trapezium is 138m^2 the distance and the difference between the lengths of the parallel sides are 12m and 7m repactivaly​

Answer 1

Solution

Area of trapezium :-

$\tt\dfrac{1}{2} \: \times (sum \:of \: parallel \: \: sides)$

$\tt138 = \frac{1}{2} \times (sum) \times 12$

$\red{ \tt \: sum \: = \frac{138}{6} = 23}$