Concept:In a parallelogram, opposite sides are equal in length.So the perimeter is twice the sum of one pair of adjacent sides.Explanation:The two given side lengths are 5.8 m and 8.2 m.The other two sides are also 5.8 m and 8.2 m.Perimeter is the sum of all four sides:=5.8+8.2+5.8+8.2 m=2(5.8+8.2) m=2(14.0) m=28.0 mAnswer:The perimeter is 28.0 m.Therefore, the correct option is C.