Question

AFirst try was incorrectA triangular prism can be unfolded into the net shown below. Find thetotal surface area of the triangular prism.3.6 m5.2 m7.5 m20 m

Answer 1

ANSWER:

The total surface area of the triangular prism is 386 square meters

STEP-BY-STEP EXPLANATION:

We have that the surface area formula of the triangular prism is the following

$SA=b\cdot h+L\cdot(s_1+s_2+s_3)$

s1, s2 and s3 are the sides of the triangle, the base and the height are of the triangle and L is the length of the rectangle.

Replacing:

$\begin{gathered} SA=7.5\cdot3.6+20\cdot(5.2+5.2+7.5) \\ SA=27+359 \\ SA=386 \end{gathered}$