Each side of a square photo frame is 20 cm. What is its perimeter?
Note
A square has 4 equal sides, so perimeter = 4 × 20 = 80 cm. Since all four sides of a square are equal, multiplying one side by 4 gives the distance around it.
Each side of a square photo frame is 20 cm. What is its perimeter?
A square has 4 equal sides, so perimeter = 4 × 20 = 80 cm. Since all four sides of a square are equal, multiplying one side by 4 gives the distance around it.