The MEASUREGEOM command is fairly new (since AutoCAD 2010). It measures distance, radius, angle, area, and volume and replaces some older commands like AREA and DIST (although those commands still exist).
Choose Home tab> Utilities panel and then click the Measuregeom drop-down list. Then choose the option that you want to start the MEASUREGEOM command.
Here is what you can measure:
Distance: You get a prompt for two points. When you specify them, you get a result like this, showing you not only the distance, but also the angle in the XY plane, angle from the XY plane (for 3D), and delta (change) of X, Y, and Z.
Radius: You’re prompted to select an arc or circle. MEASUREGEOM shows you the radius and diameter.
Angle: You’re prompted to select an arc, circle, or line, or press Enter to specify the vertex of the angle. If you select an arc, you see its included angle. If you select a circle, specify the first point of the desired angle, then the second angle endpoint. If you select a line, then select a second line.
Area: Specify the first corner point and then subsequent adjacent points, going around the area and press Enter for the total. If you have a closed object, you can use the Object suboption. You can use the Add Area suboption to keep a running total or the Subtract Area suboptions to remove areas. The Arc suboption finds the area of an arc, by assuming that the endpoints are joined by a line. The Area option also provides the perimeter for closed areas, the length for open areas, and the circumference for circles.
Volume: Specify the first corner point and then subsequent adjacent points, going around the area on the XY plane, and press Enter to get the total. Then enter a height. You can use the Object suboption; you can select a 2D object and specify a height. Like with the Area option, you can add and subtract volumes.
Type x and press Enter to end the command.