Calculate the surface area of a right rectangular prism. Each edge length is 15 feet.

To calculate the surface area of a right rectangular prism, we need to find the area of each face and then sum them.

A right rectangular prism has 6 faces:
- 2 rectangular faces with dimensions 15 ft by 15 ft (top and bottom)
- 2 rectangular faces with dimensions 15 ft by 15 ft (front and back)
- 2 rectangular faces with dimensions 15 ft by 15 ft (side 1 and side 2)

The area of each rectangular face is given by the formula: length * width.

Therefore, the area of each face is 15 ft * 15 ft = 225 square feet.

To calculate the total surface area, we sum the areas of all the faces:

Total surface area = (2 * 225) + (2 * 225) + (2 * 225)
= 450 + 450 + 450
= <<450+450+450=1350>>1350 square feet.

Therefore, the surface area of the right rectangular prism is 1350 square feet.