Draw a neat diagram of a hockey field with all its dimensions.

A correct drawing shows a rectangular hockey field 91.4 m long and 55 m wide, with: 1. The centre line and the two 23 m lines (22.9 m from each back line). 2. The two shooting circles, a semicircle of radius 14.63 m in front of each goal. 3. The goals 3.66 m wide and 2.14 m high on the back lines, and the penalty spot 6.4 m from each goal. 4. The side lines, back lines and the corner flags.