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  1. The diagonals of a rhombus are 24 cm and 10 cm. The perimeter of the rhombus (in cm) is :
    1. 68
    2. 65
    3. 54
    4. 52
Correct Option: D

Using Rule 12,
If d1 and d2 are the lengths of diagonals of a rhombus. Then
Perimeter = 2√d1² + d2² = √24² + 10²
= √276 + 100 = 2√676
= 2 × 26 = 52 cm


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