geometry
posted by JOY on .
Calculate the lateral area and surface area of a pyramid whose height is 8 ft and whose base is square with 12 ft sides.

http://www.mathsisfun.com/geometry/pyramids.html
I'll be glad to check your answers. 
I came up with 288 ft^2

I didn't get that for either the lateral or surface area.

Could you give me the formulas for processing the areas

Is 384 ft correct