8th Class Mathematics Menstruation Question Bank Mensuration

  • question_answer If all the sides of a triangle be increased by 200 per cent, what is the corresponding increase in its area?

    A) 300%                          

    B) 400%

    C) 600%                          

    D) 800%

    Correct Answer: D

    Solution :

    Let sides are a, b, c. So, new sides are 3a, 3b, 3c. Original area \[=2l+2b\] So, new area \[=2(l+b)\] Increased area 9 K - K = 8K % = 800%.


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