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31 July, 02:31

The lateral area of the prism is 240 square inches. Find the total surface area.

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Answers (2)
  1. 31 July, 02:45
    0
    288 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

    Solving forA

    A=ah+bh+ch+1

    2﹣a4+2 (ab) 2+2 (ac) 2﹣b4+2 (bc) 2﹣c4=8·10+10·10+6·10+1

    2·﹣84+2· (8·10) 2+2· (8·6) 2﹣104+2· (10·6) 2﹣64=288
  2. 31 July, 02:53
    0
    Its C, 288 square inches
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