A banner is 15 square feet. How many square inches are equivalent to 15 square feet?

1 square foot = 144 square inches

15 * 144 = _________ square inches

Is the answer 2160

Right.

To find out how many square inches are equivalent to 15 square feet, we need to know the conversion factor from square feet to square inches.

There are 144 square inches in one square foot. This is because there are 12 inches in one foot, so the conversion factor for area is 12 inches * 12 inches = 144 square inches.

To convert from square feet to square inches, we multiply the number of square feet by 144.

Let's calculate it for 15 square feet:

15 square feet * 144 square inches/square foot = 2,160 square inches

Therefore, there are 2,160 square inches equivalent to 15 square feet.