Using it's formula, it is found that the surface area of the square pyramid is of 429 cm².
The surface area of a square pyramid of base a and slant height l is given by:
[tex]A = a^2 + 2al[/tex]
In this problem, the parameters are:
Then:
[tex]A = a^2 + 2al = 11^2 + 2(11)(14) = 429[/tex]
The surface area of the square pyramid is of 429 cm².
You can learn more about surface area of a square pyramid at https://brainly.com/question/12876583
