The diameter of a circle is 8 millimetres. What is the circle's area?d=8 mmUse 𝜋 ≈ 3.14 and round your answer to the nearest hundredth.
Question
The diameter of a circle is 8 millimetres. What is the circle's area?d=8 mmUse 𝜋 ≈ 3.14 and round your answer to the nearest hundredth.
Solution
To find the area of a circle, you can use the formula A = πr², where r is the radius of the circle.
Step 1: Find the radius. The diameter of the circle is 8 mm, so the radius is half of the diameter, which is 4 mm.
Step 2: Substitute the radius into the formula. A = π(4 mm)² = π(16 mm²) = 50.24 mm².
So, the area of the circle is approximately 50.24 mm².
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