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The diameter of a circle is 22 millimetres. What is the circle's area?Use ​𝜋 ≈ 3.14 and round your answer to the nearest hundredth.

Question

The diameter of a circle is 22 millimetres. What is the circle's area?

Use
π3.14 \pi \approx 3.14
and round your answer to the nearest hundredth.

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Solution

Step 1: Understand the formula for the area of a circle. The formula is A = πr², where A is the area, r is the radius, and π is a constant approximately equal to 3.14.

Step 2: Find the radius of the circle. The radius is half of the diameter, so in this case, the radius is 22 mm / 2 = 11 mm.

Step 3: Substitute the radius into the formula. A = π * (11 mm)² = π * 121 mm².

Step 4: Calculate the area. A = 3.14 * 121 mm² = 379.94 mm².

Step 5: Round the answer to the nearest hundredth. The area of the circle is approximately 379.94 mm².

This problem has been solved

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