MathematicsThe area of a rhombus is 240  cm 2   and one of the diagonals is 16 cm  .Find another diagonal.

The area of a rhombus is 240  cm 2   and one of the diagonals is 16 cm  .Find another diagonal.


  1. A
    30cm
  2. B
    15cm
  3. C
    60cm
  4. D
    45cm 

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    Solution:

    It is given that, the area of a rhombus is 240  cm 2   and one of the diagonals is 16 cm  .
    We have to find the length of another diagonal.
    Let d 1   and d 2   be the diagonals of rhombus and the diagonal d 2   be x cm  .
    We know that,
    area of rhombus= 1 2 (product of diagonals) 240= 1 2 d 1 d 2 240= 1 2 16 (x) 240=8x x=30cm  
    Hence, the length of another diagonal of a given rhombus is 30cm.
    Therefore, option 1 is correct.
     
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