Question

17 km. 45 deca m. - 8 km. 12 hecto. m. 25 deca. m. = ?​

Answer 1

Answer would be 8 kilometers.

Step-by-step explanation:

1 kilometer = 10 hectometer

1 kilometer = 100 decameter

We have to subtract 8 km 12 hectometer 25 decameter from 17 km 45 decameter

First we convert all the units into Decameter.

17 km. 45 deca m = (17 × 100) + 45

                             = 1700 + 45

                             = 1745 decameter

8 km 12 hectometer 25 decameter = (8 × 100) + (12 × 10) + 25

                                                           = 800 + 120 + 25

                                                           = 945 decameter

Now subtract :

  1745   decameter

-   945    decameter

   800     decameter

Since 100 decameter = 1 km

800 decameter =   $\frac{800}{100}$

                           =  8  kilometers

Answer would be 8 kilometers.

Learn more about converting units : https://brainly.in/question/1271645