document.write( "Question 1089992: Three circular pencils, each with a diameter of 1 cm, are held together by an elastic band. What is the (stretched) length of the band? \n" ); document.write( "

Algebra.Com's Answer #704409 by ikleyn(52794) $\"\"$ $\"About$

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document.write( "Obviously, their centers (in the section) form equilateral triangle with the side length of 1 cm.\r\n" );
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document.write( "So, add 1 + 1 + 1 = 3 centimeters for linear elements first. \r\n" );
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document.write( "Then add to it three times the length of the arc of the circle of the radius 0.5 cm and the central angle of 120 degrees.\r\n" );
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document.write( "So, the final answer is   =  centimeters.\r\n" );
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