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23 December, 19:38

The length of a rectangle is 9 cm more than half the width. Find the length if the perimeter is 60 cm.

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Answers (2)
  1. 23 December, 20:16
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    The length is 16cm each side because 16+16 = 32 and then 60-32 = 28 and divide 28 by 2 is 14 and 14 by 2 is 7 and so the length minus half the width is 9. 16-7 is 9
  2. 23 December, 21:06
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    width = x

    length = 0.5x + 9

    2 (x + 0.5x + 9) = 60

    1.5x + 9 = 60/2

    1.5x + 9 = 30

    1.5x = 30 - 9

    1.5x = 21

    x = 21/1.5

    x = 14 cm ← width

    length = 0.5x + 9 = 0.5 * 14 + 9 = 7 + 9 = 16 cm
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