Areas Related to Circles · Class 10 · CBSE Mathematics
If the circumference and the area of a circle are numerically equal, then the radius of the circle is:
Practice question from Areas Related to Circles (Class 10 · CBSE Mathematics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-27934B
If the circumference and the area of a circle are numerically equal, then the radius of the circle is:
- A.2 unitsCorrect answer
- B.pi units
- C.4 units
- D.7 units
Solution
Given that circumference = area, we have . Dividing both sides by (since ), we get . Thus, the radius is 2 units.
More from Areas Related to Circles
- Find the area of a sector of a circle with radius 6 cm if angle of the sector is 60^circ. Use pi = frac{22}{7}.
- The area of the largest triangle that can be inscribed in a semi-circle of radius r is:
- If the perimeter of a semi-circular protractor is 36 cm, find its diameter. (Use pi = frac{22}{7})
- A chord of a circle of radius 10 cm subtends a right angle at the centre. Find the area of the corresponding minor segment. (Use pi = 3.14)
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