document.write( "Question 979474: 10.The perimeter of a triangle is a + b + c, where a, b, and c are the sides of the triangle. Billy tells us that the perimeter of a particular triangle is 30 cm, and two of its sides are 25 cm and 10 cm. We need to report back to Billy how long the third side is and what kind of triangle it is. What should we tell him? \n" ); document.write( "
Algebra.Com's Answer #600734 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "The perimeter of a triangle is \r
\n" ); document.write( "\n" ); document.write( "\"P=a+%2B+b+%2B+c\", \r
\n" ); document.write( "\n" ); document.write( "if Billy tells us that the perimeter of a particular triangle is \"P=30cm\",\"+a=25cm\" and \"b=10cm\", than\r
\n" ); document.write( "\n" ); document.write( "\"30cm=25cm%2B+10cm+%2B+c\"\r
\n" ); document.write( "\n" ); document.write( "\"30cm=35cm+%2B+c\"
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\n" ); document.write( "since already \"30cm%3C25cm%2B+10cm\", we know that \"c=-5cm\" and the sides of the triangle could not be negative number\r
\n" ); document.write( "\n" ); document.write( "so, Billy gave us wrong data\r
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