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Let Q equals left parenthesis 3 comma square root of 5 right parenthesis comma R equals left parenthesis 7 , 3 square root of 5 right parenthesis . A point P in the XY-plane varies in such a way that perimeter of capital delta P Q R is 16. Then the maximum area of capital delta P Q R is

Botany-General

  1. 6   
  2. 12   
  3. 18   
  4. 9  

    Answer:The correct answer is: 12P lies on the ellipse for which are foci and length of major axis is 10 and eccentricity is 3/5.

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