Calc War of the Worlds: Second Wave - Tripod falls to Earth

A tripod falls to Earth and creates a crater. A quick search reveals a ute to be 1497mm tall, or 1.497m.
106 pixels = 1.497m
1 pixel = 1.497m/106 = 0.0141226415m
0.0141226415m X 550 = 7.76745282m
0.0141226415m X 761 = 10.7473302m
10.7473302m/2 = 5.3736651m

52 pixels = 7.76745282m
1 pixel = 7.76745282m/52 = 0.149374093m
0.149374093m X 189 = 28.2317036m
28.2317036m/2 = 14.1158518m

Volume as half an ellipsoid.

V = 4/3πabc
= 4/3 X π X 14.1158518 X 5.3736651 X 10.7473302
= 3414.8127/2
= 1707.40635m^3

Violent fragmentation of rock is 69000000 joules/m^3.

E = 1707.40635 X 69000000
= 117811038150 joules
= 28.1575138981836 tons of TNT

Final Results
Tripod falls to Earth = 28.158 tons of TNT