Respuesta :

A rectangular prism is a cuboid.

Given data

Length L = 12 in

Width W = 6 in

Height H = 6 in

Next, apply the surface area of a cuboid.

Surface area of a cubiod = 2LH + 2LW + 2WH

= 2 x 12 x 6 + 2 x 12 x 6 + 2 x 6 x 6

= 144 + 144 + 72

= 360 square in