Ruchi measure the area of a kitchen add 2.81×10 to the fourth power square units. when she recorded the area she wrote 2.81×10 to the fourth power square feet which statement about for labeling of units is true

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint