brandiwingard
14.10.2019 •
Mathematics
The diameter of a circle is 3.2 meters. which is the circumference of the circle rounded to the nearest hundredth of a meter?
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Ответ:
Radius= 3.2/2=1.6m
Circumference of circle= 2*pie*r= 2*3.14*1.6=10m
Ответ:
the speed of Amy is 14400/40=360m/min
Bill spend 40+20=60min to arrive at school so his spped is 14400/60=240m/min
the difference between speeds is 360-240=120m/min
Amy faster on 120m/min