The rhombus study table has a 180 cm perimeter.To find the perimeter of a rhombus, we should just follow the formulaFormula for perimeter of rhombus:P= 4awhere p is the perimeter and a is the value of sideSubstitute for the given valueP = 4(45)Multiply the side by 4P= 4 x 45 P = 180 cmTherefore, the study table has a perimeter of 180 cm