Question 1077720
In approx 365 days, the Earth sweeps 360 degrees.
360 degrees = {{{ 2pi }}} radians

(73days/365days)*{{{2(pi) }}}  = {{{0.4*pi = highlight(2pi/5) }}} radians


================
The above of course assumes the Earth's orbit is a circle with distance from the sun of 93million miles.

To answer the question from your thank you message, if we assume a circular orbit, and  93million miles from the sun, and an exact 365 day year,  then the linear speed of the earth is  {{{2(pi) * 93x10^6 * (1/365) * (1/24) = 66705 }}} mi/hr