how do you find the diameter of a circle if you don't have the radius? the circumference is 628 cm.

Divide the circumference by pi, which is 3.14 (approximately). That will give you the diameter.

Circumference = pi * D

To find the diameter of a circle when you only have the circumference, you can use the formula Circumference = π * Diameter.

In this specific case, you have a circumference of 628 cm. To find the diameter, divide the circumference by pi (π), which is approximately 3.14.

Let's plug the values into the formula:

628 cm = 3.14 * Diameter

To isolate the diameter, divide both sides of the equation by 3.14:

Diameter = 628 cm / 3.14

Simplifying the calculation:

Diameter ≈ 200 cm

Therefore, the approximate diameter of the circle is 200 cm.