Physics Check My Work Please

Determine the minimum angle at which a roadbed should be banked so that a car traveling at 20 m/s can safely negotiate the curve if the radius of the curve is 200m.
* Data:
v=20 m/s
r=200m
*Formula
TAN(theta)=v^2/rg
*Solution
TAN(theta)=(20 m/s)^2/(200m)(9.8 m/s^2)
TAN(theta)=(400 m^2/s^2)/(1960 m^2/s^2)
TAN(theta)=.204 Degrees
Thank You For Your Time! JL

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