PLEASE help with physics pressure problem!?

Estimate the pressure exerted on a floor by the following.





(a) one pointed chair leg (51 kg on all four legs) of area = 0.03 cm2





(b) a 1550 kg elephant standing on one foot (area = 820 cm2)

PLEASE help with physics pressure problem!?
Hi Dear;I think:


(a)P=F\A


F=W=mg


W=51x9.8=499.8 N


A=0.03 cm^2=0.03x10^-4 m^2


P=499.8\0.03x10^-4=166600000 Pa


P=1666 atm


.................................


(b)W=1550x9.8=15190 N


A=820 cm^2=8.2x10^-2 m^2


P=15190\8.2x10^-2=185243.9 Pa


P=1.852439 atm


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Hope you Bests!!!