Answer:
The box is 7.5 in long.
Step-by-step explanation:
Calculate the total surface area of the sides of this box (neglecting the ends).
If the base is 3" by 3" and the length of the box is 6", then the total surface area (without ends) is 4 times 3" by x, or 12x in². 80% of this "lateral surface area" is 0.80(12x in²), or 9.60x in° and this 9.60x in² represents the surface area covered b y the label. That label surface area is 4(3 in by 6 in), or 72 in²
Equating 9.60x in² and 72 in² and solving for x yields x = (72 in²) / (9.60 in²:
x = 7.5 in
The box is 7.5 in long.
Yes, the porch is 12 feet wide.
If 1 inch = 2 feet, and if she makes the porch 6 inches wide, then you multiply the 6inches by 2, since 1 inch is equal to 2 feet.
54 makes sense because it is less than a 90 degree angle and 80 wouldn't go through.