Diamond wants to buy cookies for her friend. The radius of a cookie is 7 inches. What is the cookie's circumference?
To find the circumference of a circle, you can use the formula: Circumference = 2πr, where "r" represents the radius of the circle. In this case, the radius of the cookie is given as 7 inches.
So, to find the circumference, plug in the value of the radius into the formula:
Circumference = 2π * 7.
The mathematical constant π (pi) is approximately 3.14, but for more precise calculations, you can use more decimal places.
Circumference ≈ 2 * 3.14 * 7.
Circumference ≈ 43.96 inches.
Therefore, the cookie's circumference is approximately 43.96 inches.