After a circular piece of paper is cut, it is assembled into an approximate rectangle with the width equal to the radius and the area equal. The perimeter of this rectangle is 24.84 cm. How many square meters is this?

After a circular piece of paper is cut, it is assembled into an approximate rectangle with the width equal to the radius and the area equal. The perimeter of this rectangle is 24.84 cm. How many square meters is this?

The width of an approximate rectangle is equal to half the circumference of the original circle
Then, the original radius of the circle is: 24.84 △ 2 △ 3.14 + 1 = 3cm
The original area of the circle is: 3.14 × 3 × 3 = 28.26 square centimeters