Answer:
Step-by-step explanation:
200ft (1mile/5,280ft) 60ft/1hr 200×60/5,280 = 2.27272727273
and round it to the2 decimal is 2.27
Note that the units of ft and sec get cancelled out and replaced with miles and hr.
A= b×h
b=12
h=9
12×9= 108
A=108m
Hope this helps.