Literally this calc but with a different tree.
Average radius is (220+75):2=147,5 px
Lenght is 1066 px.
Volume is 72889653,57142851 px^3.
220 px = 170 cm -> 1 px = 0,77272727272727272727272727272727 cm
Volume = 72889653,57142851*(0,77272727272727272727272727272727)^3 = 33.631.373,778778011798459804658152 cm^3
33.631.373,778778011798459804658152*18,34= 616.799.395,1027887363837528174305 J Small Building level+