Question

Runners will race around a rectangular park. The length of the park is 100 meters. The width of the park is 70 meters.

Answer 1

If you want to know the number of yards, the correct unit is yards.

Both meters and yards are linear measures. Since you want a linear measure (yards), you will start with the given linear measures (meters), selection C.

_____
The perimeter is 2*(100 m +70 m) = 340 m, about 371.83 yards.