3 yd 2.6 yd 2 yd 3 yd 3 yd what is the surface are of this triangular pyramid?

The output would be 4n-20

Step-by-step explanation:

1. Take n and subtract it by 5. You get an expression of n-5.

2. Next, you multiply that whole expression by 4. You have to multiply each and every thing in that expression.

3. After multiplying n by 4 and -5 by 4, you put it back into an expression --- 4n-20, because 4*n=4n and -5*4=-20.

Pls Mark Brainiest, it would help me a lot