Find the surface area of a square pyramid if the area of the base is 324 cm^2 and the height is 40 cm.

If the base is 324 then the base length would be: 18

so the slant hight would be: 41

So the surface area would be 41*18/2*4=1476 1476+324=1800cm^2 is our final answer.

the answer is: 1800cm^2