Question

Find the surface area of the prism below.

Answer 1

the surface area of the prism = 378 cm³

Explanation:

Let S be the surface area of the prism

B be the base of the prism

h be the height of the prism

T be the lateral surface area of the prism

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Formula

S = 2B + T

_________

`\begin{aligned}B &=(9 * 12)/(2) \\&=54\end{aligned}`

`\begin{aligned}T &=7,5 *(9+12+15) \\&=270\end{aligned}`

`\begin{aligned}S &=2 B+T \\&=2 *(54)+270 \\&=378\end{aligned}`