Question 1064064
First, to find the length of DB, we get:
5.9˛+DB˛=6˛=36
DB˛=1.19
DB=1.091
Area ADB=1/2 (5.9)(1.091)=3.22
Area ADC=1/2 (5.9)(7+1.091)=23.87
Area ABC=23.87-3.22=20.65 units. ☺☺☺☺