SOLUTION: what is the surface area of a pyramid with a base area of 81cm and a slant height of 6cm for each triangular face?

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Question 1077132: what is the surface area of a pyramid with a base area of 81cm and a slant height of 6cm for each triangular face?
Answer by ikleyn(52852) About Me  (Show Source):
You can put this solution on YOUR website!
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Since the base area is 81 cm^2, then the base side dimension is sqrt%2881%29 = 9 cm.
Thus the lateral surface area is four times the area of a triangle with the base of 9 cm and the height of 6 cm.

Can you complete the solution on your own from this point ?


On surface area of pyramids see the lessons
    - Surface area of pyramids
    - Solved problems on surface area of pyramids
in this site.


Also,  you have this free of charge online textbook on Geometry
    GEOMETRY - YOUR ONLINE TEXTBOOK
in this site.

The referred lessons are the part if this textbook under the topic
"Surface area of 3D solid bodies".