Question

Find the total surface area of a trapezoidal prism.
Please help. Picture below.

Answer 1

The surface area of a right prism can be found by the formula:

SA = p*h + 2*B where p is the perimeter of the trapezoidal base, h is the height of the prism, and B is the area of the trapezoidal base.

Answer 2

SA = p*h + 2*B

SA = (8 + 4 + 6 + 4.47) * 14 + 2 * (.5*4*(8 + 6))

(Recall that the area of a trapezoid is 1/2 times its height times the sum of its parallel base lengths.)

Answer 3

Take this SA = (8 + 4 + 6 + 4.47) * 14 + 2 * (.5*4*(8 + 6))

and crank out the surface area. Before starting, verify that the numbers are correctly placed.

Post what you get, and we'll compare answers, okay?

@brindli4

Answer 4

I got 370.58

@Directrix

Answer 5

Thanks for the help @Directrix :)

Answer 6

@brindli4 That is what I got, too.