The answer is: "
40 cm " .
_________________________________________________________Note:_________________________________________________________
 ;
Solve for "x" (in "cm" ) ; 
→ 5x = 200 * 1 ; 
→ 5x = 200 ; 
Divide each side of the equation by "5" ; 
 to isolate "x" on one side of the equation; & to solve for "x" ; 
→ 5x / 5 = 200 / 5 ; 
to get:
→ x = 40 .
___________________________________________________________The answer is: " 
40 cm " .
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