Knowing your weight and area of the shoe, calculate how much pressure you produce when walking

Knowing your weight and area of the shoe, calculate how much pressure you produce when walking and how much while standing still. Weight 39kg, 456 complete squares and 78 incomplete squares.

1) So, we find the pressure by the formula p = F / S
2) Find F. = 39 kg * 10 N / kg = 390 N
3) Now the area is S. There are 495 squares in total (let 2 incomplete squares = 1 whole square). 495/4 = 124cm2 = 0.0124m2 (since 4 squares are 1 cm2)
4) When walking, we lean on 1 leg, therefore p = 390 / 0.0124 = 31451 Pa
5) But standing still, we lean on 2 legs, which means we multiply the Area by 2. 0.0124 * 2 = 0.248 m2
6) Now we will find the pressure when we are standing still. p = 390 / 0.0248 = 15725 Pa
We can conclude that when walking, the pressure is 2 times greater than when we are standing still.
Answer: 31451 Pa, 15725 Pa.