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# need help with surface area

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Find the surface area.

Mar 11, 2021

#1
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Hey there!

Here, the Surface Area (SA) will be equal to the base + the three faces. We know the formula for the area of a triangle ($$\frac{Base*Height}{2}$$), so we get:

$$SA=6.9 + 3(\frac{4*7}{2})=...cm^2$$