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The diagonals of a rhombus WXYZ intersect at M. If |MW| = 5cm and |MX|...

Mathematics
WAEC 2018

The diagonals of a rhombus WXYZ intersect at M. If |MW| = 5cm and |MX| = 12cm, calculate its perimeter

  • A. 42cm
  • B. 48cm
  • C. 52cm
  • D. 60cm
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Correct Answer: Option C
Explanation

Let the length of a side of the rhombus be n

Then, n\(^2\) = 5\(^2\) + 12\(^2\)

= 25 + 144 = 169

n = \(\sqrt{169}\)

= 13cm

Hence, perimeter of rhombus = 4n = 4 x 13

= 52cm


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