Answer:
4
Step-by-step explanation:
hope this helps
Well the perimeter is 12x2 +16x2=56cm
We have two congruent trapezoids.
The formula of an area of a trapezoid:

We have:

Substitute:

Answer:

33 * 3 + 3/3 = 100
I do not believe u have to use all of the operations because it says " at most once ".