Choose the Correct Formula to Solve the Problem $$a ^ { 2 } = b ^ { 2 } + c ^ { 2 }$$

Short Answer

Choose the correct formula to solve the problem. $$a ^ { 2 } = b ^ { 2 } + c ^ { 2 }$$ $$E = I R$$ $$R = E / I$$ A 1,500-watt electric iron is connected to 120 volts. How many amps will the iron take? Carry the answer to one decimal places. $$P = E I$$