The area of a circle is 15.7 square centimeters. Draw a square with the largest area inside. How many square centimeters is this square?

The area of a circle is 15.7 square centimeters. Draw a square with the largest area inside. How many square centimeters is this square?

Draw a square with the largest area in the circle, then the diagonal of the square should be equal to the diameter of the circle
Radius of circle = √ 15.7 / 3.14 = √ 5cm
So the diagonal of the square is 2 √ 5cm = √ 20cm
Square area = diagonal square / 2 = √ 20 * √ 20 / 2 = 10 square centimeter