Question

3 km 9 hm 9 dam 19 m + 7 km 2 dam=

Answer 1

3 km 9 hm 9 dam 19 m + 7 km 2 dam=​

we know that

1 km-1,000 m

1 hm=100 m

1 dam=10 m

Convert the measures to meters

3 km=3*1,000=3,000 m

9 hm=9*100=900 m

9 dam=9*10=90 m

7 km=7*1,000=7,000 m

2 dam=2*10=20 m

substitute

3 km 9 hm 9 dam 19 m=3,000+900+90+19=4,009 m

7 km 2 dam=7,000+20=7,020 m

so

4,009+7,020=11,029 m

Convert to km hm dam m

11,029 m=11 km+0 hm+ 2 dam+9 m

therefore

the answer is

11 km 2 dam 9 m