Answer:
what do you need help with?
There is 3600 seconds per hour.
Multiply the speed per second by 3600 to get the speed in miles per hour then convert to kilometer/hour.
4.9 * 3600 = 17,640 miles per hour
17,640 x 1.6 = 28,224 kilometers per hour
Answer:
144
Step-by-step explanation:
PEMDAS
(12)^2
144
