a truck's tire has an outside radium of r inches. the area of the side of the tire not including inside rim is (pi)r^2-81(pi) inches whats the diameter of the rim
fill in blanks:
whole rim_________ rim:_________=(pi)r2
without rim= (pi)r^2-81(pi) r^2=________
rim= whole tire-without rim r = ________
=______ - (____)=______ d=2r___________
HELP PLEASE!!!!!!!!!!!!!!!!!!
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