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Posted by on Wednesday, February 16, 2011 at 5:42pm.

Name the lenghts of the sides of three rectangles with a perimeter of 12 units use whole numbers only. I don't understand the question

  • math - , Wednesday, February 16, 2011 at 5:52pm

    The questions is telling you that there are three possible rectangles whose perimeter is 12 units and whose sides are whole numbers in length.

    The perimeter of a rectangle is given by 2(L+B).

    So, this means that L+B = 6.

    What whole numbers add up to 6?

    1+5 = 6
    2+4 = 6
    3+3 = 6

    And those are your rectangles. One has sides of 1 and 5 units, the second has 4 and 2 unit sides and the third is a square with a 3 unit side.

  • math - , Wednesday, February 16, 2011 at 5:53pm

    Each rectangle has a perimeter of 12 units.

    P = 2L + 2W

    12 = (2 * 4) + (2 * 2)

    12 = (2 * 3) + (2 * 3)

    Can you think of the possible dimensions of a third rectangle?

  • math - , Tuesday, May 31, 2011 at 6:38pm

    using only whole numbers, how to can i draw 3 rectangles with perimeter of 12 units

  • math - , Tuesday, February 7, 2012 at 9:08pm

    name the lenghts of the sides of three rectangles that have perimeters of 14 units

  • math - , Wednesday, March 7, 2012 at 9:44pm

    how do you find the perimeter

  • math - , Monday, March 12, 2012 at 9:34pm

    72

  • math - , Tuesday, May 29, 2012 at 7:59pm

    74

  • math - , Wednesday, February 5, 2014 at 7:06pm

    How can you do perimeter

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