anonymous
  • anonymous
If the cost of painting 1 sq m is Rs.50, then what will be the maximum amount of saved in painting the room in the most economical way, if the sum of the length , breadth and height is 21 and all sides are integers? (floor is not painted ). 1 ) 10850 2) 8400 3) 9650 4) 8540
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
What's your guess?
anonymous
  • anonymous
No clue.
hartnn
  • hartnn
for the saved amount to be maximum, lets consider the volume to be maximum. Volume will be max when the room is cube-shaped. length = height = breadth = 7 (since their sum= 21) now try to calculate area of the faces, excluding floor

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More answers

anonymous
  • anonymous
Should't volume be the minimum to save the maximum ?
anonymous
  • anonymous
And if I calculate like the way you suggested, the answer comes out to be Rs.12250
hartnn
  • hartnn
how are we calculating saved amount here?
anonymous
  • anonymous
No clue :/
hartnn
  • hartnn
seems to be an incomplete question. to find how much we saved, we need to find how much we spent before...
hartnn
  • hartnn
saved amt = amt spent before - amount spent now, when sum = 21

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