document.write( "Question 1098677: The radii of 3 circles are 5cm, 7cm and 8cm as A as the biggest one and C as the smallest one and B in the middle. What is the perimeter of the triangle A to B to C \n" ); document.write( "

Algebra.Com's Answer #713054 by ikleyn(52788) $\"\"$ $\"About$

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document.write( "I guess that the circles are touching externally,\r\n" );
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document.write( "although the condition/your post does not state it.\r\n" );
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document.write( "Then one side of the triangle has the length of  5+7 = 12 cm;\r\n" );
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document.write( "the other side has the length of  5+8 = 13 cm\r\n" );
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document.write( "and the third side  has the length of  7+8 = 15 cm.\r\n" );
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document.write( "Then the perimeter of the triangle is  12 + 13 + 15 = 40 cm.\r\n" );
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document.write( "Answer.  The perimeter of the triangle ABC is 40 cm.\r\n" );
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