Calculating the Area of a Circle: 7 cm Radius Explained
Learn how to calculate the area of a circle with a radius of 7 cm using the formula A = πr². Step-by-step explanation included!
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The area of a circle with a radius of 7 cm can be calculated using the formula A = πr². By substituting the radius (7 cm) into the formula, we get A = π(7)² = π(49) ≈ 153.94 square centimeters.
FAQs & Answers
- What is the formula for the area of a circle? The formula for the area of a circle is A = πr², where r is the radius.
- How do you find the radius of a circle if you know the area? To find the radius from the area, you can rearrange the formula to r = √(A/π).
- What units are used when calculating the area of a circle? The area of a circle is expressed in square units, such as square centimeters or square meters.
- Can the area of a circle be negative? No, the area of a circle cannot be negative as it represents a physical space.