UPSKILL MATH PLUS

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1. The scalene triangle has \(40 \ cm\) as its perimeter and whose two sides are \(13 \ cm\) and \(15 \ cm\), find the third side.
 
Answer:
 
The third side \(=\)  \(cm\)
 
2.closed shape has \(20\) equal sides and one of its sides is \(3 \ cm\). Find its perimeter.
 
Answer:
 
Perimeter \(=\) \(cm\)