[tex]P=1.48 \ km = 1 \ 480 \ m \\ \\1 \ km = 1000 \ m \\ \\ l=460 \ m \\ \\ it \ has \ perimeter : \\ \\ P = 2 \cdot l + 2\cdot w \\ \\1480=2*460 + 2w \\ \\1480=920 +2w\\ \\ 2w=1480-920\\ \\2w=560 \ \ /:2 \\ \\w=280 \ m \\ \\Answer : \ field \ has \ a \ width : \ 280 \ m[/tex]
