I use the car's tire as it easier to get its size since common tire are 17 inch.
The most common Tire size is 17 ich = 17 inch = 43.18cm
39px = 43.18cm
1px = 43.18cm / 39 = 1.107179cm
Wall height = 153px * 1.107179cm = 169.398387cm
Wall lenght = 158px * 1.107179cm = 174.934282cm
Wall width = 11px * 1.107179cm = 12.178969cm
Volume = 174.934282×12.178969×169.398387 = 360906.51553162 cm3
The wall is made of bricks. Bricks fragmentation value is, on average, 3.49375 MPa or 3.49375 J/cc.
360906.51553162 * 3.49375 = 1260917.13864j or 0.000301 tons or 1.260e6joules 9-B Wall level