A farmer has a rectangular field of length and breadth 240 m and 180 m respectively. He
wants to fence it with 3 rounds of rope. What is the total length of rope he must use?
Answers
The farmer has to cover three times the perimeter of that field.
Therefore,
Total length of rope required is thrice its perimeter.
Perimeter of the field = 2 × (length + breadth)
Perimeter of the field = 2 × (240 m + 180 m)
Perimeter of the field = 2 × 420 m
Perimeter of the field = 840 m
____________________
Total length of rope required = 3 × 840 m
Total length of rope required = 2520 m
Answer:
A farmer has a rectangular field of length and breadth 240 m and 180 m respectively. He wants to fence it with 3 rounds of rope as shown in figure 10.4. What is the total length of rope he must use? =2520m
Step-by-step explanation:
Perimeter of rectangular field = 2(l+b)
= 2×420
=840m
the perimeter of the rectangular field is 840m. so, farm need 840m long rope to fence the field 1 time.
total rope need to fence the field 3 times=840×3=2520m