posted by Sam .
find the surface area of a right prism with the given features: The bases are trapezoids with bases of lengths 6 and 10 perpendicular to one side of the length 12 ; height = 12
Round the answer to the nearest square unit
The prism has six sides. The two trapezoidal bases have areas of 8*12 = 96, each
The four rectangular sides have areas
12*6, 12*10, 12*12 and 12*sqrt(160)
I used the Pythagorean theorem for the last one.
Add up the areas.