Correct Answer - Option 3 : 36°

**Given:**

The total number of sides of a regular polygon is 10.

**Concept Used:**

A polygon is regular when all angles are equal and all sides are equal.

**Formula used:**

The sum of the exterior angles of a polygon is 360°.

**Calculation:**

As the total number of sides is 10 and the sum of exterior angles is 360°

Each exterior angle = 360°/10 = 36°

**∴ Each exterior of a regular polygon of 10 sides is 36°.**