Answer:
C) 81 Square Inches
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=6·3+7.5·3+4.5·3+1
2·﹣64+2·(6·7.5)2+2·(6·4.5)2﹣7.54+2·(7.5·4.5)2﹣4.54=81
the answer is c.
