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Mathematics, 26.10.2021 14:00 GEEKLIFE6598

The electrical resistance R ohm of a wire varies directly as the length L cm and inversely as the square root of the diameter d cm a. Express d in terms of L, R and the constant of proportionality K.
b. Find the value of correct to 2 decimal places when L=15, R=0.13ohms and K=1×10 to the power minus three.

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