Question

Question No. 8
Find the area of the quadrilateral ABCD given in the adjacent diagram

1)264 sq. cm
2)268 sq. cm
3)274 sq. cm
4)282 sq. cm
​

Answer 1

Answer:

1) 264 sq. CM

join AC

ar of tri ABC=1/2×8×15 = 60 sq CM

By Pythagoras in tri ABC

AC=17cm

In triADC, by heron's formula

ar of tri ADC =204 sq CM

ar of quad = ar of tri ABC+ar of tri ADC

=60+204

=264 sq cm