Question

expland the kilometre into the meter and solve the problems 20 km 400m​

Answer 1

Answer:

20 km

=20×1000

=20000+400

=20400m

Answer 2

Answer:

20400 m

Step-by-step explanation:

1 km = 1000 m

20 km = 20 x 1000 m = 20000 m

400 m will be as it is, because it is already in metre SI unit.

(20000 + 400) m = 20400 m