Option C
ANSWER:
The length of each side of the regular decagon is 7 m.
SOLUTION:
Given that, a regular decagon has perimeter equal to 70 meters.
We need to find the length of each side.
Let the length of each side be "d"
We know that a regular decagon will have ten sides.
Each side is of equal length.
So, perimeter of decagon = d + d + d + d + d + d + d + d + d + d


d = 7 m
Hence, the length of each side of the regular decagon with perimeter 70 m is 7 m.