PDF chapter test TRY NOW

Complete the table given below:
 
\(a\)
\(b\)
\(c\)
\(s\)
20 \(cm\)
35 \(cm\)
45 \(cm\)
\(cm\)
 
[Hint: \(a\), \(b\) and \(c\) are the side lengths of a triangle and \(s\) is the semi-perimeter]