If that's the length and width of a regular four-sided figure, the perimeter is 5 m.
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17m
5m2 - 17m + 12 = 0∴ 5m2 - 5m - 12m + 12 = 0∴ 5m(m - 1) - 12(m - 1) = 0∴ (5m - 12)(m - 1) = 0∴ m ∈ {1, 12/5}
1 metre = 0.001 km so 17m = 0.017 km
Perimeter = 490 cm + 9.8 m + 6.5 m = 21.2 m
Perimeter = 7+7+12+12 = 38 m