8th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer Two right circular cones of equal curved surface areas have their slant heights in the ratio of 3 : 5. Find the ratio of their radii.

    A)  5 : 3         

    B)  5 : 7             

    C)  8 : 3                            

    D)  3 : 5

    Correct Answer: A

    Solution :

    Let slant heights be \[3x\] and \[5x\] Also, \[\pi {{r}_{1}}.3x=\pi .{{r}_{2}}.5x\]

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