MathDB
AMC 8 2003 Problem 22

Source:

July 23, 2011
geometryAMCAMC 8

Problem Statement

The following figures are composed of squares and circles. Which figure has a shaded region with largest area? [asy]/* AMC8 2003 #22 Problem */ size(3inch, 2inch); unitsize(1cm); pen outline = black+linewidth(1); filldraw((0,0)--(2,0)--(2,2)--(0,2)--cycle, mediumgrey, outline); filldraw(shift(3,0)*((0,0)--(2,0)--(2,2)--(0,2)--cycle), mediumgrey, outline); filldraw(Circle((7,1), 1), mediumgrey, black+linewidth(1)); filldraw(Circle((1,1), 1), white, outline); filldraw(Circle((3.5,.5), .5), white, outline); filldraw(Circle((4.5,.5), .5), white, outline); filldraw(Circle((3.5,1.5), .5), white, outline); filldraw(Circle((4.5,1.5), .5), white, outline); filldraw((6.3,.3)--(7.7,.3)--(7.7,1.7)--(6.3,1.7)--cycle, white, outline); label("A", (1, 2), N); label("B", (4, 2), N); label("C", (7, 2), N); draw((0,-.5)--(.5,-.5), BeginArrow); draw((1.5, -.5)--(2, -.5), EndArrow); label("2 cm", (1, -.5));
draw((3,-.5)--(3.5,-.5), BeginArrow); draw((4.5, -.5)--(5, -.5), EndArrow); label("2 cm", (4, -.5));
draw((6,-.5)--(6.5,-.5), BeginArrow); draw((7.5, -.5)--(8, -.5), EndArrow); label("2 cm", (7, -.5));
draw((6,1)--(6,-.5), linetype("4 4")); draw((8,1)--(8,-.5), linetype("4 4"));[/asy]
<spanclass=latexbold>(A)</span> A only<spanclass=latexbold>(B)</span> B only<spanclass=latexbold>(C)</span> C only<spanclass=latexbold>(D)</span> both A and B<spanclass=latexbold>(E)</span> all are equal <span class='latex-bold'>(A)</span>\ \text{A only}\qquad<span class='latex-bold'>(B)</span>\ \text{B only}\qquad<span class='latex-bold'>(C)</span>\ \text{C only}\qquad<span class='latex-bold'>(D)</span>\ \text{both A and B}\qquad<span class='latex-bold'>(E)</span>\ \text{all are equal}