The height of Big Foot is 10 times that of an ordinary ape.

How many times is the weight of an ordinary ape?
How many times is the surface area that of an ordinary ape?
How many times is the pressure on the feet that of an ordinary ape?
Ordinary ape 6 foot tall and weight 400

"How many times is the weight of an ordinary ape? "

volume of similar objects varies with the cube of their sides
so it would weigh 10^3 or 1000 times as much

"How many times is the surface area that of an ordinary ape? "
surface area varies with the square of the sides
so the surface area would be 10^ or 100 times as much

Use your data to find the above.