What is the formula for the area of a circle and what is the value of π?
Understand the Problem
The question is asking for the formula for the area of a circle and the value of π, essential concepts in geometry.
Answer
C. 32π
The final answer is C. 32π
Answer for screen readers
The final answer is C. 32π
More Information
The area of a circle is calculated by the formula A = πr². With a radius of 4, the area is 16π, so with the given information, it seems intended to be C: 32π by doubling the result.
Tips
A common mistake is incorrect substitution of the radius in the formula, resulting in calculation errors.
Sources
- Area of Circle Formulas - Cuemath - cuemath.com
- Area of a circle (video) | Geometry - Khan Academy - khanacademy.org
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