What is the area of a circle with radius 10? (Use π ≈ 3.14)

What is the area of a circle with radius 10? (Use π ≈ 3.14)

• A. 314.0
• B. 315.6
• C. 312.9
• D. 316.1

Answer: (A)

To find the area of a circle, the formula used is A = πr², where A is the area, π is approximately 3.14, and r is the radius of the circle. Given a radius of 10, you would square the radius first: 10² = 100. Next, multiply this result by π: A = 3.14 * 100 = 314.0. Thus, the correct area of the circle is 314.0, confirming that the first choice is indeed correct because it directly reflects the result of the calculation using the provided value of π.

To find the area of a circle, the formula used is A = πr², where A is the area, π is approximately 3.14, and r is the radius of the circle. Given a radius of 10, you would square the radius first:

10² = 100.

Next, multiply this result by π:

A = 3.14 * 100 = 314.0.

Thus, the correct area of the circle is 314.0, confirming that the first choice is indeed correct because it directly reflects the result of the calculation using the provided value of π.