A circle is inscribed in a square as shown. If the radius of the circle is 4 cm, what is the area of the remaining square? (Use π=227)
Since the radius of the circle is 4 cm, the length of the square's side will be the diameter of the circle which is 8 cm.
Area of square =8×8=64 cm2
Area of circle =227×4×4=50.28 cm2
Area of the remaining square = 64 - 50.28 = 13.72 cm2