6th Class
Mathematics
Mensuration
Question Bank
Mensuration
question_answer
Four square plots of side 30 m each are in a row. What length of barbed wire is required to fence the plots?
A)300 m
B)3000 m
C)\[\text{30 }{{\text{m}}^{\text{2}}}\]
D)\[\text{300 }{{\text{m}}^{\text{2}}}\]
Correct Answer:
A
Solution :
The square plots in a row form a rectangle with length \[4\text{ }\times \text{ }30\text{ }m\] = 120m and width 30m. Length of barbed wire \[=2\times (120+30)\text{ }m=2\times 150\text{ }m=300\text{ }m\]