18. Calculate distance and displacement

 

Consider a path \(DABC\) travelled by Naveen. He starts his travel from \(D\) to \(A\) and then \(A\) to \(B\) and then \(B\) to \(C\). If \(DA =\) 20 \(m\), \(AB =\) 10 \(m\), \(DC = \) 11 \(m\) and \(BC =\) 11 \(m\). Then what are the distance and displacement travelled by Naveen?

 

Distance travelled by Naveen \(=\)  \(m\)