Question 1181336
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For your info:


<pre>
(1)  Pyramids  do not have sides. 

     They have FACES, EDGES and VERTICES.



(2)  To solve the problem correctly, we need to know, which of the two given 

     edges is the side of the base square and which is the lateral edge.
</pre>

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For what reason do you need the solution, when you do not know terminology ?


Learn terminology first.



On volume of pyramids, &nbsp;see the lessons in this site


&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Volume/_Volume-of-pyramids.lesson>Volume of pyramids</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/word/geometry/Solved-problems-on-volume-of-pyramids.lesson>Solved problems on volume of pyramids</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Volume/OVERVIEW-of-LESSONS-on-volume-of-pyramids.lesson>Overview of lessons on volume of pyramids</A>



If you will need more lessons on surface area or volume of solids, &nbsp;let me know.


I will give you many other relevant links to my lessons.



Happy learning &nbsp;(!)



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@MathLover1 starts her solution hypothesizing that


    “Two of the sides”  means side of the base {{{a}}} and {{{L}}} is slant height {{{s}}}.



This hypothesis &nbsp;VERY &nbsp;EASY &nbsp;can be wrong / irrelevant, &nbsp;and the slant height is &nbsp;NEVER &nbsp;considered as a &nbsp;"side".

So be careful if her solution is applicable.


In Math, &nbsp;serious teachers/tutors &nbsp;DO &nbsp;NOT &nbsp;MAKE &nbsp;such hypotheses, &nbsp;when teach the student.


A serious tutor &nbsp;REQUESTS &nbsp;the student to provide a &nbsp;RELIABLE &nbsp;input.