Find the surface area. (just answer with the number, don't worry about
units)

The surface area of a cuboid is 120 sq ft.

Step-by-step explanation:

Given,

The fig is a cuboid.

Length(l) = 10 ft

Width(w) = 5 ft and

Height(h) = 4 ft

To find the surface area

Formula

The surface area of a cuboid = 2(l+w)h sq ft

So,

The surface area of a cuboid = 2(10+5)×4 sq ft

= 120 sq ft

40 is the final : )