The perimeter of a shape is the total length of its boundaries. In this case, you are adding up four equal sides, each 17 cm long:

$17 \, \text{cm} + 17 \, \text{cm} + 17 \, \text{cm} + 17 \, \text{cm} = 68 \, \text{cm}$

So, the perimeter is 68 cm.

Would you like more details or have any questions about this? Here are some related questions you might find interesting:

1. How do you calculate the perimeter of other polygons?
2. What is the perimeter of a triangle with sides 10 cm, 12 cm, and 14 cm?
3. How do you find the perimeter of a rectangle if the length is 5 cm and the width is 3 cm?
4. What is the relationship between the perimeter and area of different shapes?
5. How does changing one side of a square affect its perimeter?

Tip: To calculate the perimeter of any polygon, simply add the lengths of all its sides.