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  • Tick the correct answer in the following and justify your choice : If the perimeter and the area of a circle are numerically equal, then the radius of the circle is (A) 2 units (B) pi units (C) 4 units (D) 7 units

5. Tick the correct answer in the following and justify your choice : If the perimeter and the area of a circle are numerically equal, then the radius of the circle is

                (A)    2 units
                (B)    \pi units
                (C)    4 units
                (D)    7 units

Answers (1)

best_answer

Let the radius of circle be r.

Then according to question, we can write :- 

                            Perimeter      =     Area

                                    \\2\pi r\ =\ \pi r^2\\\\r\ =\ 2\ units

Hence option (A) is correct.

Posted by

Devendra Khairwa

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