Please check my answer to this Question. I want to know if you got the same answer.

following three problems involve the resistance of a ten meter long gold wire that is 1 millimeter in diameter.

what is the wires cross sectional area? 0.31 cm^2
what is the unit for the resistance? ohm
what is the number of the gold wires resistance?0.3

Question

Please check my answer to this Question. I want to know if you got the same answer.

following three problems involve the resistance of a ten meter long gold wire that is 1 millimeter in diameter. 

what is the wires cross sectional area? 0.31 cm^2
what is the unit for the resistance? ohm
what is the number of the gold wires resistance?0.3

espex · Answer

What did you use to get your cross-sectional area?

anonymous · Answer

the diameter

espex · Answer

And the formula?

anonymous · Answer

$$A_{circle} = \pi r^2 = \frac{ \pi}{4}d^2$$

anonymous · Answer

no idea how you got the area that you did

espex · Answer

Which is where I was going, your number does not match.

anonymous · Answer

my book doesn't use that formula. it just gives me the formula for resistance