2. Questions Bank
  3. 10th Class
  4. Mathematics
  5. Areas Related to Circles

10th Class Mathematics Areas Related to Circles Question Bank MCQs - Areas Related to Circles

  • question_answer
    Atoothed wheel of diameter is attached to a smaller wheel of diameter\[\text{3}0\text{ cm}\]. How many revolutions will the smaller wheel make when the larger one makes 15 revolutions?

    A) 23

    B) 24

    C) 25

    D) 26

    Correct Answer: C

    Solution :

    [c] Circumference of smaller wheel \[=30\pi \,cm\]
    Circumference of bigger wheel \[=50\pi \,cm\]
    Now,
    \[15\times 50\pi =~\text{number of revolutions}\times \text{30}\pi \]
    \[\Rightarrow \]   Number of revolutions =25


You need to login to perform this action.
You will be redirected in 3 sec spinner