Circuit counting

Mathematics at the level of the 3rd grade of primary school. Basics of calculating the perimeter of figures: rectangle, square, triangle

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Rectangle

Square

Triangle

4 cm

6 cm

5 cm

4 cm

(a + b) * 2 = Circumference

a * 4 = Circumference

a + b + c = Circumference

4 cm

3 cm

7 cm

4 cm

Circumference =

Circumference =

11 cm

Circumference =

cm

cm

cm