Well if you know you have a 4 in and a 6 in logo you need to first figure out what the new measurements are going to be. Multiply both your 4 and your 6 by 6 since we know it is 6 times larger. This will give you your new measurements in inches. Then to find the area you use the formula A=l*w to find your area. Finally your area is in the form of inches squared so you need to find it in square feet. Since 1 foot = 12 inches 1ft^2 = 144 inches so divide your answer by 144 to get the final answer.