8th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer A right circular cone has height of 12 cm and base diameter of 70 cm. Find slant height

    A)  37 cm   

    B)  27 cm         

    C)  36 cm                         

    D)  26 cm

    Correct Answer: A

    Solution :

    (a): \[1=\sqrt{{{r}^{2}}+{{h}^{2}}}=\sqrt{{{(35)}^{2}}+{{12}^{2}}}\]             \[=\sqrt{1225}+144=\sqrt{1369}=37\]  

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