单项选择题
In the figure above, a square is circumscribed about a circle with a diameter of 20 cm. Points Q, R, S, and T are the midpoints of the square’s sides. What is the total area, in cm2, of the square？
单项选择题
In the figure above, a square is circumscribed about a circle with a diameter of 20 cm. Points Q, R, S, and T are the midpoints of the square’s sides. What is the total area, in cm2, of the square？