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Part ACSIR NET December 2024half-diagonals-and-a-side-form-a-right-triangle

Half diagonals and a side form a right triangle

One side and one diagonal of a rhombus are 13 cm and 24 cm, respectively. Then the area of the rhombus is

  1. A.90 cm2^{2}
  2. B.100 cm2^{2}
  3. C.110 cm2^{2}
  4. D.120 cm2^{2}✓ Correct

You have the answer. Trap Analysis is why the other three were written.

Not a worked solution repeated four times — the specific reasoning error each wrong option was built to reward, and why this one tests execution slip.

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50 are analysed free — try those first.

The trap it tests

Execution slip

The idea was right. The computation was not.

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