We have an answer to "Find the surface area of the prism."

Ethan Lee

Answered question

2022-05-20

Find the surface area of the prism.

alenahelenash

Expert2022-06-05Added 556 answers

The perimeter of the base is the sum of the lengths of the sides.

$p = 5 + 6 + 12 + 3 = 26 cm$
Since the base is an isosceles trapezoid, its area is $\frac{1}{2} h (b_{1} + b_{2})$

$B = \frac{1}{2} (4) (6 + 12) = 36 {cm}^{2}$

$\begin{array}{l} T . S . A . = p h + 2 B \\ = 28 (12) + 2 (36) \\ = 336 + 72 = 408 {cm}^{2} \end{array}$

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