1) First, we must remember the definition of a decametre (1 dam) in terms of meters (1 m):
[tex]1dam=10m[/tex]And also the definition of a millimetre (1 mm) in terms of meters (1 m):
[tex]1\operatorname{mm}=0.001m[/tex]2) Now, we are ready to do the calc. We simply divide 760,854 millimetres by 1 decameter and then we replace by the definition of each unit in terms of its value in meters:
[tex]\frac{760,854\operatorname{mm}}{1\text{dam}}=760,854\cdot\frac{1\operatorname{mm}}{1\text{dam}}=760,854\cdot\frac{0.001m}{10m}=760,854\cdot0.0001=\frac{760,854}{10000}=76.0854[/tex]Answer = 76.0854
We have 76.0854 decametres in 760,854 millimetres.
