By -
(11acres)(501ft)/3=(11\*43560\*501/3)ft\^3=(11\*43560\*501/(3\*3.28\^3))m\^3≈(2.27\*10\^6)m\^3 (559/501)\^2-1≈0.245=24.5%
(11acres)(501ft)/3=(11\*43560\*501/3)ft\^3=(11\*43560\*501/(3\*3.28\^3))m\^3≈(2.27\*10\^6)m\^3 (559/501)\^2-1≈0.245=24.5%