Question

106. In a right triangle ABC, /3=90%,
AB=9 cm, AC=15 cm and D, E are the
midpoints of AB and AC respectively, then
the area of AADE is:
(1) 12 cm?
(2) 13.5 cm?
(3) 27 cm2
(4) 24 cm​

Answer 1

Answer

By Pythagoras theorem

AC²=AB²+BC²

15²=9²+BC²

225-81=BC²

144=BC²

√144=BC

12=BC

BC=12cm

Area of triangle =basexheight/2

Area =12x9/2

Area =6x9

Area =54cm²