The sides of the triangle are 10 cm x cm and its area is 200 cm, make an equation and find the unknown side of the rectangle.

According to the condition of the problem, the sides of the rectangle are 10 centimeters and x centimeters, and its area is 200 cm2.

The area of a rectangle is equal to the product of one side by the other, which means 10 * X = 200, 10X = 200, and X = 200: 10 = 20.

Answer: The unknown side of the rectangle is 20 centimeters.



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