Suction of Vacuum and Octopus?

Question

(a) A very powerful vacuum cleaner has a hose 3.05 cm in diameter. With no nozzle on the hose, what is the weight of the heaviest brick that the cleaner can lift?
N
(b) A very powerful octopus uses one sucker of diameter 3.05 cm on each of the two shells of a clam in an attempt to pull the shells apart. Find the greatest force that the octopus can exert in salt water 32.3 m depth.
N

Answer 1

Hint:
Your vacuum cleaner is operating at 1 atmosphere.
Your octopus at about 4 atmospheres.
Beyond that, do your own homework.