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7th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer
    Consider the following statements. (i) If the circumference and area of a circle are numerically equal, then the diameter is equal to 4. (ii) Radius of a circle whose area is \[25\pi ,\] is 5cm. Which of the statement is/are correct?

    A) Either (i) or (ii)

    B) Neither (i) nor (ii)

    C) Both (i) and (ii)

    D) Cannot say anything

    Correct Answer: C

    Solution :

        (i) \[2\pi r=\pi {{r}^{2}}.\] \[\Rightarrow \]\[r=2\] \[\Rightarrow \]Diameter\[=2\times 2=4\] (ii) \[\pi {{r}^{2}}=25\pi \] \[\Rightarrow \] \[r=5\]


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