question_answer

The length of a rectangle is \[8\] times its breadth. If the perimeter of the rectangle is\[61.2\,\,m\], find the difference between the length and the breadth of the rectangle.

A) \[238\,\,cm\]                  

B)           \[2380\,\,cm\]                

C)           \[23.8\,\,cm\]                 

D)           \[2830\,\,cm\]

Correct Answer: B

Solution :

Perimeter\[=18\,\,units\] Given perimeter\[=61.2\,\,m\] \[18\]units \[=61.2\,\,m\] \[1\]unit \[=\frac{61.2}{18}m=3.4\,\,m\] Difference between length and breadth \[=7\] units \[=7\times 3.4\,\,m\]             \[=23.8\,\,m\]             \[=2380\,\,cm\]