Monday, August 2, 2010

Problem 490: Tangent Circles, Arc, Radius, Circular Sector, Area

Geometry Problem
Click the figure below to see the complete problem 490 about Tangent Circles, Arc, Radius, Circular Sector, Area.

Problem 490. Tangent Circles, Arc, Radius, Circular Sector, Area
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Complete Problem 490

Level: High School, SAT Prep, College geometry

2 comments:

  1. using outer ang
    S = 4π

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  2. /_FBD=150 so /_ABC=30. /_CAB=130 so /_ACB=20 or /_ECF=160=8∏/9 which makes x=(1/2)(r^2)(θ)=(1/2)*(3)^2*(8∏/9)=4∏
    Vihaan, Dubai

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