the squirrel and the post

I saw a squirrel climbing up a cylindrical post spirally,making the circuit in 4 feet.
Supposing the top of the post is 16 feet high and 3 feet in circumference ,how many feet does it travel to the top?
shilpi84Asked:
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ozoCommented:
20
shilpi84Author Commented:
EXPLAIN
ozoCommented:
If it goes 4 feet up when it goes 3 feet around, then it travels sqrt(4*4+3*3)=5 feet
to go 16 feet up, it would then travel 5*16/4 = 20 feet.
(assuming that's what you mean by travel and spirally)

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