Convert the total length of the ramp from feet to inches: How many inches are there in 28 feet?

To convert feet to inches, it's essential to understand the relationship between these two units of measurement. There are 12 inches in 1 foot. Therefore, to convert a length measured in feet into inches, one must multiply the number of feet by 12.

In this scenario, you have a total length of 28 feet. To find the length in inches, the calculation would be:

28 feet × 12 inches/foot = 336 inches.

Thus, there are indeed 336 inches in 28 feet, making the correct answer the total sum calculated. This conversion is a straightforward arithmetic operation that applies universally, making it a fundamental aspect of unit conversions in various contexts, including architecture and construction.