I didn't put your back yard in the picture in 2019. My bad.
Don't assume 1u containers, they could be VW microbuses. Don't assume a hemisphere, it can be prolated. Three decimal places is Okay, though.
The relevant geometry is the Golden Ratio of the base rectangle.
Here's a 40x40ft plan with three 2u containers from the same year.
They don't need to be containers.
On the way to Ready Player One.