What Is the Impedance ( Z ) of a Coil $$Z = \sqrt { R ^ { 2 } + X ^ { 2 } }$$

Short Answer

What is the impedance ( Z ) of a coil with 84 ohms resistance ( R ) and 500 ohms reactance (X)? Round the answer to the nearer ohm. $$Z = \sqrt { R ^ { 2 } + X ^ { 2 } }$$