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1 year ago

Find the surface area of the prism below.

Mathematics

1 answer:

CaHeK987 [17]1 year ago

5 0

Answer:

the surface area of the prism = <em>378</em> cm³

Step-by-step 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

_______

Formula

S = 2B + T

_________

$\begin{aligned}B &=\frac{9 \times 12}{2} \\&=54\end{aligned}$

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

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

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