The perimeter of a square of side 5 cm is:

## The reasoning A **square has 4 equal sides**. The perimeter means the total distance around the shape — you're basically walking around all four sides and adding them up. Given: Each side = 5 cm **Perimeter of a square = 4 × side** So: Perimeter = 4 × 5 = **20 cm** Think of it like fencing a square plot of land. If one side needs 5 meters of wire, you'll need that same amount for all four sides. --- ## Why the wrong options tempt you **A) 10 cm** — This catches you if you only added two sides (5 + 5). Remember, a square has *four* sides, not two! **C) 25 cm** — This is the **area** (5 × 5), not perimeter. Don't confuse "space inside" with "distance around." **D) 15 cm** — You might get this by adding only three sides. Always count all four! --- ## Quick takeaway **Perimeter = distance AROUND = add all sides; for a square, that's 4 × side length.**