Question

in the given figure, ABCD is a rectangle AD=BC=15cm and CD=AB=10cm, a line drawn AC find the area of the shaded region

Answer 1

Answer:

Given : AB=8cm BC=6cm

AC=82+62=10 

AO=210=5 

S=25+5+8=9

Area of ΔAOB=S(S−a)(S−b)(S−c)=9(9−8)(9−5)(9−5)=9×1×4×4=3×4 

Area of ΔAOB=12 sq. units.