Swampy soil can withstand pressures up to 20 kPa. How much support should a 15 kN tracked

Swampy soil can withstand pressures up to 20 kPa. How much support should a 15 kN tracked vehicle have to walk on such ground?

P = 20 kPa = 20,000 Pa
F = 15 kN = 15,000 N
S -?
The pressure P is determined by the ratio of the force F to the area on which this force acts S, P = F / S, we express from the formula S = F / P; S = 15,000N / 20,000Pa = 0.75 m ^ 2. If the area of the tracks is smaller, then it will simply sink into the ground, the pressure of the machine will be greater than the ground can withstand.
Answer: the tracked vehicle must have a support area of at least 0.75 m ^ 2