Atriangular pyramid has lateral faces with bases of 6 meters and height of 9 meters. the area of the base of the pyramid 15.6 meters . what is the surface area of the pyramid?

To find surface area, you can find the area od all sides and add them together
First, area of an triangle is 1/2 length times width
So you do 1/2 6*9= 1/2 54=  27  The area of the three triangles are 27
27 times 3 is  81
81 plus the base of 15.6 is 96.6
The surface area is 96.6 meters squared