A rice field is pentagonal in shape. The length of its sides are 105m 215m 158m 197m and 155m respectively. If the owner wants to fence it with three strands of barbed wire,how many meters of wire in all will be needed?
To find the perimeter of the pentagonal rice field, we need to add up the lengths of all five sides:
105m + 215m + 158m + 197m + 155m = 830m
Since the owner wants to fence it with three strands of barbed wire, we need to multiply the perimeter by 3:
830m * 3 = 2490m
Therefore, a total of 2490 meters of wire will be needed.