The area of a rectangle is 100 square centimeters. If the length is reduced by four times and the width is increased by four times, the rectangle will become a rectangle

Invariant. Rectangle

The area of a rectangle is 100 square centimeters. If the length of a rectangle is reduced to one fourth of its original length and the width is increased by four times, what is the area and the side length of a rectangle

The area of rectangle and square is multiplied by the length of the side, one side is reduced by one fourth, and the other side is expanded by four times
100 = 10 * 10, the square side length is 10 cm

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