what is the perimeter of a regular decagon if one side measures 13.5 cm?

In a regular decagon, all ten sides are congruent. So if one side is 13.5 cm, multiply this length by 10, and you should get 135 cm for the perimeter. Hope this helps. Good luck. Peace.

To find the perimeter of a regular decagon (a polygon with 10 sides), you need to multiply the length of one side by the total number of sides.

In this case, if one side measures 13.5 cm, you can use the formula:

Perimeter = Length of one side × Number of sides

Substituting the values:

Perimeter = 13.5 cm × 10

Calculating the result:

Perimeter = 135 cm

Therefore, the perimeter of the regular decagon is 135 cm.