document.write( "Question 320366: 3. A dart hits a dartboard that is in the shape of a square with sides of 4 m. There are four congruent circles inside the square that are all touching. The shaded region is everything but the 4 circles. What is the probability that the dart will land in a circle?\r
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document.write( "a. 21%
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document.write( "b. 25%
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document.write( "c. 50%
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document.write( "d. 79% \n" );
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Algebra.Com's Answer #229522 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A dart hits a dartboard that is in the shape of a square with sides of 4 m. There are four congruent circles inside the square that are all touching. The shaded region is everything but the 4 circles. What is the probability that the dart will land in a circle? \n" ); document.write( "----------------- \n" ); document.write( "Draw the pictures and you will see the diameter of each of the \n" ); document.write( "circles is 2 m; so each radius is 1m. \n" ); document.write( "So the area of each circle is pi sq meters. \n" ); document.write( "So the area of the four circles is 4pi sq meters. \n" ); document.write( "--- \n" ); document.write( "The area of the square is 16 sq meters. \n" ); document.write( "--------------- \n" ); document.write( "P(land in a circle) = 4pi/16pi = 1/4 = 25% \n" ); document.write( "============================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================== \n" ); document.write( "a. 21% \n" ); document.write( "b. 25% \n" ); document.write( "c. 50% \n" ); document.write( "d. 79% \n" ); document.write( " \n" ); document.write( " |