Question

If a racetrack is in the form of a ring whose inner circumference is 264m and outer circumference is 30m then the width of the track is

Answer 1

inner circumference (2πr) = 26.4 m

radius of outer circle = ( 26.4*7)/44

=184.8/44

=4.2 m

outer circumference (2πr)= 30

r=(30*7)/44

=210/44

=4.77 m

width of track = 4.77-4.20

= 0.57 m