Answer by
worker3092 (20)
A regulation dartboard will have an 18in diameter, and be 1. 5in thick. The single number outer area should measure 3. 547 square inches, and the single number inner area should measure 2. 297 square inches. The single bull's-eye area should measure 1. 031 inches, and the double bull's-eye area should measure 0. 196 inches.