What is the perimeter of a rhombus if one side is 20 cm?

A rhombus is a parallelogram with equal sides.

The perimeter of a rhombus is the sum of the lengths of all sides of the rhombus.

The perimeter of a rhombus is calculated by the formula P = 4 * a, where a is the side of the rhombus.

20 * 4 = 80 (cm) rhombus perimeter.

Answer: 80 centimeters perimeter of a rhombus.

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