On a 1/4 acre lot what percentage would be left after building a tennis court on a 120'x80'

1 answer

1 acre = 43,560 square feet

(1/4) * 43,560 = 10,890 sq. ft.

120 * 80 = 9,600 sq. ft.

10,890 - 9,600 = 1,290

1,290/10,890 = 0.1184 = about 3/10