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## How do I change the diameter of a circle in Autocad?

**Create a Radius or Diameter Dimension**

- Click Annotate tab Dimensions panel Dimension. …
- Select an arc or a circle.
- At the prompt, enter r (Radius) or enter d (Diameter).
- Before specifying the dimension line location, you can edit or rotate the text.
- Click to place the dimension line.

## Is a radius half the diameter?

The radius of a circle is the length of the line segment from the center of a circle to a point on the circumference of the circle and diameter is a line segment from one end of the circle to the other end of the circle passing through the center of the circle. So, the radius is **half the length of the diameter**.

## How do you reduce the size of Fusion 360?

From the Modify menu, click Scale.

…**Note: The mesh can be scaled non-uniformly as well by selecting the drop-down for Scale Type.**

- Select the entity to be scaled and enter a Scale Factor.
- Click OK to finish scaling.
- If design history is enabled, leave the mesh workspace by clicking Finish Mesh in the toolbar.

## How do you find the diameter of a dimension?

**To Create a Diameter Dimension**

- Click Home tab Annotation panel Diameter. Find.
- Select the arc or circle to dimension.
- Enter options as needed: To edit the dimension text content, enter t (Text) or m (multiline text). …
- Specify the leader line location.