Respuesta :

Answer:

3 inches

Step-by-step explanation:

Length x Width = Area

or in this case, to find the width:

Area / Length = Width

Area = 90

Length = 30

90 / 30 = 3 inches

Answer:3

Step-by-step explanation:

area is side * side so we know one side of the rectangle is 30 so we just need to find what times 30 will equal 90 ---  3*30=90