Ozai = 13.45 = 1.8 m (a decent height)
Height of the cone = 348 px = 46.57 m
Diameter of cone = 354 px = 47.37 m
Radius of cone = 23.7 m
Volume of cone = 1/3*Area of Base*height = 1/3*π*R^2*h
V = 27392.5 m^3
Q = m*c*dT
Q = ρ*V*c*dT
Using the values from this blog
ρ = 0.27 kg/m^3
dT = 1200
c = 1000 J/kg*K
Q = 8875167498.8 Joules (2.12 Tons of TNT) barely Large Building level