What is the diameter of a circle whose area is 16π?
Correct answer: B. 8
- A. 4
- B. 8
- C. 16
- D. 8π
Explanation
To find the diameter, first calculate the radius by using the formula for the area of a circle: Area of circle = πr^2. Given that the area is 16π, we get r = 4. The diameter is then found by multiplying the radius by 2, resulting in a diameter of 8. Option A is incorrect as it refers to the radius, Option C is incorrect as it provides a value double the diameter, and Option D is incorrect as it includes unnecessary π in the answer.
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