A circle has radius 9. What is its area (π ≈ 3.14)?

A circle has radius 9. What is its area (π ≈ 3.14)?

• A. 253.5
• B. 254.34
• C. 258.3
• D. 260.1

Answer: (B)

To find the area of a circle, the formula used is A = πr², where A represents the area and r represents the radius. In this case, the radius is given as 9. Plugging this into the formula: 1. Calculate the radius squared: r² = 9² = 81. 2. Now, substitute π with the approximate value of 3.14: A = 3.14 × 81. 3. Performing the multiplication: A = 3.14 × 81 = 254.34. Thus, the area of the circle is approximately 254.34 when using the given approximation of π. This value corresponds to one of the choices provided, making it the correct answer. The accuracy of the calculations confirms that this value emerged from appropriately applying the area formula for a circle.

To find the area of a circle, the formula used is A = πr², where A represents the area and r represents the radius.

In this case, the radius is given as 9. Plugging this into the formula:

1. Calculate the radius squared:

r² = 9² = 81.

2. Now, substitute π with the approximate value of 3.14:

A = 3.14 × 81.

3. Performing the multiplication:

A = 3.14 × 81 = 254.34.

Thus, the area of the circle is approximately 254.34 when using the given approximation of π. This value corresponds to one of the choices provided, making it the correct answer. The accuracy of the calculations confirms that this value emerged from appropriately applying the area formula for a circle.