Answer:
A≈114.12
Step-by-step explanation:
A=2AB+(a+b+c)h AB=s(s﹣a)(s﹣b)(s﹣c)
s=a+b+c/2
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=9·5+6·5+4·5+1
2·﹣94+2·(9·6)2+2·(9·4)2﹣64+2·(6·4)2﹣44≈114.12459
here is the full explanation , I took a blackboard pavcs math quiz
