I have a 366cm * 366cm round above-ground plastic pool - but the yard runs at a downhill slope.
I want to lay down soil (the grass must grow back when we remove the soil) so as to level the 366cm * 366cm area. I tried to indicate the slope in the picture, it is at a maximum at the back end about 1x Brick height (8cm)
My calculation Volume = 3.66×3.66×0.08 = 1.071648 meter3
Questions: Are my calculations correct? Will 1m cubic soil be enough for just the pool? Should I get topsoil only?