2006-10-30 08:14:21 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Circumference = 2 x 13.2 x pi, or 82.938 inches.
59 mph = 59/60 miles per minutes. (.9833)
.9833 miles per minute = 62,304 inches per minute.
62,304 ipm / 82.938 inches per rev = 751.21 rev/min.
2006-10-30 08:26:28 · answer #1 · answered by JJ M 2 · 1⤊ 0⤋
If the car is running on the rim (very bad idea)
c=2*pi*r=2*3.14159*13.2=82.94in=82.94/12/5280=.0013090 miles/rev
59 mi/hr=59/60=.983333 mi/min
.98333/.0013090=751rpm
2006-10-30 08:31:38 · answer #2 · answered by yupchagee 7 · 0⤊ 0⤋
C=2Pi(r)= 2Pi(13.2in)=26.4Pi in
59mph*(1hr/60min)= 59/60 mi/min
59/60 mi/min* (5280ft/mi)= (59*5280)/(60) ft/min
(59*5280)/60 ft/min*(12 in/ft)= (59*5280*12)/60 in/min
rev/min = [(59*5280*12)/(60) in/min] / 26.4Pi in
2006-10-30 08:31:32 · answer #3 · answered by Greg G 5 · 0⤊ 0⤋