All of a "rhombus's" sides are equal so if it states " one side is 30*" then all 4 sides are 30* .
If they are asking for the inside (perimeter) than you would have to divide 30* by 4 which leaves you with 7.5 .
To check your answer complete 7.5 x 4 and you'd get 30 .
(PLEASE MARK BRAINLIEST) :)
