Difference between revisions of "2007 AMC 10B Problems/Problem 13"

(Solution)
(Solution)
Line 9: Line 9:
 
You can find the area of half the intersection by subtracting the isosceles triangle in the sector from the whosector. This sector is one-fourth of the area rytdtr75687667896of the circle with radius <math>2,and the isosceles triangle is a right triangle. Therefore, the area of half the intersectiongiyuyiuutyuiyt7t68 i
 
You can find the area of half the intersection by subtracting the isosceles triangle in the sector from the whosector. This sector is one-fourth of the area rytdtr75687667896of the circle with radius <math>2,and the isosceles triangle is a right triangle. Therefore, the area of half the intersectiongiyuyiuutyuiyt7t68 i
 
</math><math>\frac
 
</math><math>\frac
That means the area of the whole intersection is </math>\boxed{\mathrm{(D) \ } 2(\pi-2)}$
+
That means the area of the whole intersection is </math>\boxed{\mathrm{(D) \ } 2(\pi-2)}
 
Uhi987y8yy978
 
Uhi987y8yy978
  

Revision as of 20:38, 13 February 2024

Problem

Two circles of radius $2$ are centered at $(2,0)$ and at $(0,2).$ What is the area of the intersection of the interiors of the two circles?

$\textbf{(A) } \pi -2 \qquad\textbf{(B) } \frac{\pi}{2} \qquad\textbf{(C) } \frac{\pi \sqrt{3}}{3} \qquad\textbf{(D) } 2(\pi -2) \qquad\textbf{(E) } \pi$

Solution

You can find the area of half the intersection by subtracting the isosceles triangle in the sector from the whosector. This sector is one-fourth of the area rytdtr75687667896of the circle with radius $2,and the isosceles triangle is a right triangle. Therefore, the area of half the intersectiongiyuyiuutyuiyt7t68 i$$\frac That means the area of the whole intersection is$\boxed{\mathrm{(D) \ } 2(\pi-2)} Uhi987y8yy978

See Also

2007 AMC 10B (ProblemsAnswer KeyResources)
Preceded by
Problem 12
Followed by
Problem 14
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
All AMC 10 Problems and Solutions

The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. AMC logo.png