Answer: 240
Step-by-step explanation: This is what I got:
A = 2AB+(a+b+c)h
AB = s(s﹣a)(s﹣b)(s﹣c)
s=a+b+c
2
Solving forA
A = ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4 = 6·8+10·8+8·8+1
2·﹣64+2·(6·10)2+2·(6·8)2﹣104+2·(10·8)2﹣84 = 240
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