How many meters are in 1.7dm?

Answer 1

As asked the question is nonsense as a meter is a unit of length whereas a hectare is a unit of area; however if you meant how many square meters is 1.7 hectares, then:

1 ha = 10,000 sq m

→ 1.7 ha = 1.7 x 10,000 sq m = 17,000 sq m

Answer 2

1 metre has 10 decimetres, so 1.7 dm= 0.17 m.

Answer 3

.75 m 1 dm = 10 cm