O is the center if the regular polygon beloe. Find its perimeter. Round to the nearest tenth if necessary HURRY

24.8 units

Step-by-step explanation:

Given

--- sides

The attached decagon

Required

The perimeter

The decagon is made up of 10 isosceles triangles.

The angle at the vertex of each is:

Next, we create a right-angled triangle from the shape (see attachment)

is calculated as:

Next, calculate x using:

So, we have:

Make x the subject

So, the length (L) of one side of the decagon is:

The perimeter (P) of the shape is:

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet