The diameter of a circle is 24 cm. Calculate its area.
Options
A
576π cm²
B
144π cm²
C
48π cm²
D
288π cm²
Answer & Analysis
Answer
B
Analysis
Question Analysis
This question is about calculating the area of a circle using the given diameter. The core is to apply the circle - area formula after correctly finding the radius from the diameter.
Key Concept Explanation
The formula for the area of a circle is , where is the area and is the radius. The radius is related to the diameter by .
Step - by - Step Solution
1. First, find the radius. Given , then .
2. Then, substitute the radius into the area formula:
.
Replace
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