This is to estimate the size of the four large blood pools.
The tiles are about about 18 inches = 45cm.
(1) The pool near the toilet entrance looks like an equilateral triangle with side 15cm.
Area of triangle = 15 x 15 x Sqrt(3) / 4 = 97 square cm.
If thickness is 4mm = 0.2cm, volume = about 40cc.
(2) The larger pool near the linen cupboard looks like a square with 20cm sides.
Area = 400 square cm.
If thickness is 4mm = 0.2cm, volume = about 160cc.
(3) The smaller pool near the linen cupboard looks about half that, say 80cc.
(4) The pool on the bedroom carpet looks similar in area to (2), say 400 square cm. The Carpet will absorb blood, so it will not “flow” (limited by surface tension), instead blood will move into the air gaps in the carpet material. Allowing for the carpet not being entirely air (and perhaps not being 100% saturated, there may be air pockets left out), say an effective thickness of 5mm, volume = 200cc. Experiments on this would be useful.