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mariana510 Group Title

can someone hep me with this problem please. Let A, B, C denote three rectangles, all with perimeter equal to 240, whose heights are h_A = 20, h_B = 60, h_C = 110, respectively. Which of the rectangles A, B, or C has the smallest area?

  • one year ago
  • one year ago

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  1. syhna Group Title
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    i think its c

    • one year ago
  2. mariana510 Group Title
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    thank you so much. I thought it was a but i got it wrong.

    • one year ago
  3. syhna Group Title
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    oh wait i think i got it wrong

    • one year ago
  4. syhna Group Title
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    P = 2b + 2h right?

    • one year ago
  5. mariana510 Group Title
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    yes

    • one year ago
  6. syhna Group Title
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    240 = 2b + 2(20) 240 = 2b + 40 200 = 2b 100 = base of A do the same with the other rectangles 60 = base of B 10 = base of c A = b x h substitute the values then find which had the smallest area

    • one year ago
  7. mariana510 Group Title
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    Thanks, also got base C with area 360

    • one year ago
  8. syhna Group Title
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    welcome

    • one year ago
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