use models to determine the formulas for the perimeter of a rectangle (_l_ + _w_ + _l_ + _w_ or 2_l_ + 2_w_), including the special form for perimeter of a square (4_s_) and the area of a ...

Ambrose: What's the perimeter? Pizza Boss: The perimeter is the outside of the shape, like the room. The area is the inside. Perimeter outside, area inside. Perimeter outside, area inside.

Learn about perimeters and how to calculate the perimeter of a simple shape with this BBC Bitesize Maths article. For students between the ages of 11 and 14. Area of squares, rectangles and ...