Answer:
80 m²
Explanation:
You want the surface area of a cuboid with dimensions 3 m, 4 m, and 4 m.
Surface area
The area of the cuboid can be found using the formula ...
A = 2(LW +WH +LH)
This can be simplified slightly to ...
A = 2(LW +H(L +W))
Application
For the given dimensions, we find the area to be ...
A = 2(3·4 +4(3 +4)) = 2(12 +4(7)) = 80 . . . . square meters
The surface area of the cuboid is 80 square meters.
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