Question

Find the area of the quadrilateral ABCD given on the figure.

Note : please give the answer with steps.

Answer 1

use area of triangle twice= 1/2×base×height
1/2×18×54+1/2×62×20

Answer 2

area of quadrilateral ABCD = area of ∆ ADC + area of ∆ ABC
= 1/2 × b×h +1/2 × h× b
= 1/2 ( 54×18 + 20×62

= 1106 cm2 .