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Surface Area of a Rectangular Prism

To find the surface area of a rectangular prism, we can use the following formula:

$$SA=2(lw+lh+wh)$$

- l = length
- w = width
- h = height

Solving the Question

We're given:

- l = 4 yards
- w = 1 yard
- h = 3 yards

Plug the given measurements into the formula for surface area:

$$SA=2(lw+lh+wh)\\SA=2[(4)(1)+(4)(3)+(1)(3)]\\SA=2(4+12+3)\\SA=2(19)\\SA=38$$

Therefore, the surface area of the rectangular prism is 38 yd².