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Perimeter of squares and rectangles
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Learn it Perimeter is the distance around. Rectangle: $P = 2 \times (\ell + w)$. Square: $P = 4 \times s$.
Example: Find the perimeter of this rectangle.
- $P = 2 \times (14 + 6)$.
- $= 2 \times 20 = 40$.
- The perimeter is 40 cm.
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