Problem: The diameters of two circles are 888 inches and 121212 inches respectively. The ratio of the area of the smaller to the area of the larger circle is
Answer Choices:
A. 2/32 / 32/3
B. 4/94 / 94/9
C. 9/49 / 49/4
D. 1/21 / 21/2
E. none of these Solution:
A1/A2=π42/π62=4/9A_{1} / A_{2}=\pi 4^{2} / \pi 6^{2}=4 / 9A1​/A2​=π42/π62=4/9.