If the perimeter of a circle is half to that of a square, then the ratio of the area of the circle to the area of the square is
A. 22 : 7
B. 11 : 7
C. 7 : 11
D. 7 : 22
Answer:D
If the perimeter of a circle is half to that of a square, then the ratio of the area of the circle to the area of the square is
A. 22 : 7 B. 11 : 7 C. 7 : 11 D. 7 : 22