#1**+2 **

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:

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

Putting this into your calculator will give you your answer.

Let me know how you go :)

lhyla02 Mar 11, 2021