Answers

  • qais
  • Content Quality
2016-03-25T14:31:24+05:30
External dimension in cm will be 146 cm, 116 cm and 83 cm
thickness = 3 cm
so,internal dimension will be (146-6)cm, (116-6)cm, and (83-6)cm
i.e. 140 cm, 110 cm and 77 cm
area of the inner surface = 2(140×110)+2(110×77)+2(140×77)
                                        =30800 +16940 +21560 = 69300 cm²
cost = 75×693 paise = 51975 paise = Rs 519.75
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