1) 2m/s = 2*18/5 =7.2Km/h
2)In 3 hour, he would travel, 7.2*3 = 21.6Km.
Answer:
180
hope this helps :)
Answer/Step-by-step explanation:
0.012135 ÷ 10 =0.0012135
0.012135 ÷ 100 = 0.00012135
0.012135 ÷ 1000= 0.000012135
0.012135 ÷ 10000 = 0.0000012135