10th Class Mathematics Surface Areas and Volumes Question Bank Surface Area and Volume (Mensuration)

  • question_answer A right circular cone is enveloping a right circular cylinder that rests on the base of the cone. If the radius and the height of the cone is 4 cm and 10 cm respectively, the radius of the cylinder is ?r? cm and the largest possible curved surface area of the cylinder is \[\text{ }\!\!'\!\!\text{  }\!\!\pi\!\!\text{ }\,\,\text{ar(b-r) }\!\!'\!\!\text{ ,}\] then \[a\times b=?\]

    A)  15                               

    B)  20    

    C)  21                               

    D)  24

    Correct Answer: B

    Solution :

    (b): Not Available     

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