The resistance, R(in ohms), of a wire varies directly with the length, L(in cm), of the wire, and inversely with the cross sectional are, A(in cm^2). A 500cm piece of wire with a radius of 0.2cm has a resistance of 0.025 ohm. Find an equation that relates these variables.

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?