Perimeter and area: the basics | Perimeter, area, and volume | Geometry | Khan Academy
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Perimeter and area: the basics | Perimeter, area, and volume | Geometry | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/geometry-home/geometry-area-perimeter/geometry-perimeter/v/perimeter-and-area-basics Great geometry primer on perimeter and area. Listen carefully. Sal explains the concepts so you'll understand them. Practice this ...
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