A quadrilateral abcb measures ab=12, bc=5 cd=da=10 ac=4 find the area of quadrilateral abcd

A quadrilateral abcb measures ab=12, bc=5 cd=da=10 ac=4 find the area

1.	A quadrilateral abcb measures ab=12, bc=5 cd=da=10 ac=4 find the area of quadrilateral abcd
Answer» Given , ab =12bc=5cd=da=10ac=4Area of quadrilater = area of Ist triangle + area of 2nd triangle 1/2×base×height+1/2×base ×height1/2×10×10+1/2×12×55×10+6×550+3080cmTherfore the area of quadrilateral of abcd =80cm