3. What is the surface area of the
equilateral triangular pyramid below?
3 cm
9 cm
(Look at provided photo)
![3 What is the surface area of the equilateral triangular pyramid below 3 cm 9 cm Look at provided photo class=](https://us-static.z-dn.net/files/d18/1cd10e2ffa8328593910299354900a0d.png)