Simple circuits question

1. The problem statement, all variables and given/known data

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Calculate the power delivered to (or dissipated by) R1

2. Relevant equations

V=IR
P=I^2R

3. The attempt at a solution

I attempted to calculate the equivalence resistance by doing… 2+(2^-1+4^-1+4^-1)^-1 = and I get 3.

I later calculate a current of 36.67Amps, and a power of 2688 watts. What did I do wrong.

then I tr

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