What is how to find diameter?

Here's how to find the diameter of different shapes:

• Circles: The diameter of a circle is simply twice its radius. Also, the diameter is equal to the circumference divided by pi (π ≈ 3.14159).

• Spheres: Similar to circles, the diameter of a sphere is twice its radius.

• Other Shapes: The term "diameter" is most commonly used with circles and spheres. For other shapes, you might be interested in the longest distance across the shape, but it wouldn't technically be called the diameter.

Key Formulas:

• Diameter (d) = 2 * Radius (r)
• Diameter (d) = Circumference (C) / π