What is the area of a circle with a radius of 3 cm? (Use π ≈ 3.14)

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Question: What is the area of a circle with a radius of 3 cm? (Use π ≈ 3.14)

Options:

Correct Answer: 28.26 cm²

Solution:

Area = π * radius² = 3.14 * 3² = 3.14 * 9 = 28.26 cm².

What is the area of a circle with a radius of 3 cm? (Use π ≈ 3.14)

What is the area of a circle with a radius of 3 cm? (Use π ≈ 3.14)

Step 1: Identify the radius of the circle. In this case, the radius is 3 cm.
Step 2: Use the formula for the area of a circle, which is Area = π * radius².
Step 3: Substitute the radius into the formula. So, Area = π * (3 cm)².
Step 4: Calculate (3 cm)², which is 3 * 3 = 9 cm².
Step 5: Now substitute this value back into the formula. Area = π * 9 cm².
Step 6: Use the value of π, which is approximately 3.14. So, Area = 3.14 * 9 cm².
Step 7: Multiply 3.14 by 9. This gives you 28.26 cm².
Step 8: Therefore, the area of the circle is 28.26 cm².

Area of a Circle – The area of a circle is calculated using the formula A = π * r², where r is the radius.