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18 June, 06:37

a rectangle has an area of 42 square inches which has a greater perimeter the rectangle with the dimensions 21 times 2 or the dimensions 6 times 7

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  1. 18 June, 06:47
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    21times 2 because it takes more work
  2. 18 June, 07:01
    0
    A = 42in²

    P = 2l + 2w so

    (21 x 2) + (2 x 2)

    42 + 4 = 46

    46 = 21 by 2

    Now let's do 6 and 7

    (6 x 2) + (7 x 2)

    12 + 14 = 26

    46 > 26

    so 21 by 2 has greater P (perimeter)
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