![SA=b^{2} +4[\frac{1}{2}(b)(h)]](/tpl/images/0461/8019/7047f.png)
----> the length side of the square base
----> the height of the triangular faces![SA=9^{2} +4[\frac{1}{2}(9)(12)]=297\ mm^{2}](/tpl/images/0461/8019/46a76.png)
What is the total surface area of this square pyramid?
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