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Q:

The length of the diagonal of a square is ‘a’ cm. Which of the following represents the area of the square (in sq. cm.)?

  • 1
    2a
  • 2
    $${a\over\sqrt { 2}\ }$$
  • 3
    $${a^2\over 2} $$
  • 4
    $${a^2\over 4} $$
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Answer : 3. "$${a^2\over 2} $$"

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