Answer:
228m
Step-by-step explanation:
Rectangles have 6 sides so our rectangle will look something like this:
16m ↓
_________________
[ ] ←4m
[_________________]
There is also an invisible line back there which will be 4m as well.
Let's look at the Surface Area Formula:
A = 2 × (w × l + h × l + h × w)
Now let's insert our numbers:
= 2 × (4 × 16 + 4 × 16 + 4 × 4)
Multiply this out and get:
= 288
Don't forget the m!
So our answer really is,
= 288m
