5th Class
Mathematics
Mensuration
Question Bank
Mensuration
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 \[=7\times 3.4\,\,m\] \[=23.8\,\,m\] \[=2380\,\,cm\]