question_answer

The length and breadth of a rectangular hall in a model are \[0.4\text{ }m\] and \[30\text{ }cm\]respectively. What is the distance between the opposite corners of the wall in the model?

A)  \[34.16\,m\]                     

B)         \[50\,m\]

C)  \[34.16\text{ }cm\]     

D)         \[50\,cm\]  

Correct Answer: D

Solution :

 Distance between two opposite corners \[=\sqrt{{{l}^{2}}+{{b}^{2}}}\]                                      \[=\sqrt{{{40}^{2}}+{{30}^{2}}}=50\,cm\]