Perimeter of the Rhombus = 4 X side
Perimeter = 45 (given) therefore,
45=4X side
Side= 45/4 cm .
Area of the Rhombus = Base X height
Height= 8 cm (given)
Hence,
Area of Rhombus = BaseX Height
= (45/4)X 8 = 45X 2=90 square cm
Answer : Area of Rhombus = 90 square cm