Whatis the surface area of the right square pyramid in square meters?

Dimensions:
Base/length: 6 meters
Slant height: 5 meters
I know the formula is S.A.=1/2P "l"+B. I don't know what P or B is.....

1 answer

P=perimeter of the base (=4*6 m)
B=area of base (4*4 m^2)
"I"=slant height (5 m)