MathDB
Region Bounded by Circles Area

Source: 2012 AMC10B Problem #16

February 23, 2012
geometryAMC

Problem Statement

Three circles with radius 22 are mutually tangent. What is the total area of the circles and the region bounded by them, as shown in the figure?
[asy] filldraw((0,0)--(2,0)--(1,sqrt(3))--cycle,gray,gray); filldraw(circle((1,sqrt(3)),1),gray); filldraw(circle((0,0),1),gray); filldraw(circle((2,0),1),grey); [/asy]
<spanclass=latexbold>(A)</span> 10π+43<spanclass=latexbold>(B)</span> 13π3<spanclass=latexbold>(C)</span> 12π+3<spanclass=latexbold>(D)</span> 10π+9<spanclass=latexbold>(E)</span> 13π <span class='latex-bold'>(A)</span>\ 10\pi+4\sqrt3\qquad<span class='latex-bold'>(B)</span>\ 13\pi-\sqrt3\qquad<span class='latex-bold'>(C)</span>\ 12\pi+\sqrt3\qquad<span class='latex-bold'>(D)</span>\ 10\pi+9\qquad<span class='latex-bold'>(E)</span>\ 13\pi