SOLUTION: the electrical resistance R of a wire varies directly as the length L and inversely as the square of the diameter d obtain an equation. connecting R, L and d if R =27 when 1=3 and

Question 1134557: the electrical resistance R of a wire varies directly as the length L and inversely as the square of the diameter d obtain an equation. connecting R, L and d if R =27 when 1=3 and d =2, calculate the
(a)value of R. when L=8 and d=3
(b) values of d when .R=16 and L=18
Found 2 solutions by josgarithmetic, josmiceli:
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
The first sentence description using variation constant k should be

You can figure out the rest. First need to solve for k.
Note, be careful with your variables. L can be a variable; l should NOT be a variable in typewritten form or through computer and keyboard:

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..., and d if R =27 when 1=3 and d =2, calculate the ,...
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Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = constant of proportionality

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(a)

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(b)

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