Draw a neat diagram of standard 400 m track, with all its dimensions.

A standard 400 m track: 1. Two parallel straights and two semicircular curves. 2. Length of the inside lane: 400 m (measured 0.30 m from the inner edge). 3. Each straight is 84.39 m and each curve has a radius of 36.50 m. 4. Lane width 1.22 m (not more than 1.25 m), with 8 lanes, and lines 5 cm wide. 5. Start and finish lines and staggered starts for the 200 m and 400 m races; the finish line is at the end of one straight.