What is the circumference of a circle with a diameter of 10 cm?

What is the circumference of a circle with a diameter of 10 cm?

• A. 31.4 cm
• B. 20 cm
• C. 25.12 cm
• D. 15.7 cm

Answer: (A)

To find the circumference of a circle, you can use the formula: Circumference = π × diameter. In this case, the diameter of the circle is given as 10 cm. Applying the formula: Circumference = π × 10 cm. Using the approximate value of π (pi) as 3.14: Circumference ≈ 3.14 × 10 cm = 31.4 cm. This confirms that the circumference of the circle is indeed 31.4 cm. It's crucial to utilize the specific value of π accurately, whether using the simplified version as shown or a more precise value, as it significantly impacts the circumference calculation. The result aligns with the initial answer provided, reinforcing that understanding how to manipulate the formula is essential in solving similar problems.

To find the circumference of a circle, you can use the formula:

Circumference = π × diameter.

In this case, the diameter of the circle is given as 10 cm. Applying the formula:

Circumference = π × 10 cm.

Using the approximate value of π (pi) as 3.14:

Circumference ≈ 3.14 × 10 cm = 31.4 cm.

This confirms that the circumference of the circle is indeed 31.4 cm. It's crucial to utilize the specific value of π accurately, whether using the simplified version as shown or a more precise value, as it significantly impacts the circumference calculation. The result aligns with the initial answer provided, reinforcing that understanding how to manipulate the formula is essential in solving similar problems.