<PRE><B>Question 924449</B>
I am assuming this is a square based pyramid.
You are seeking the height that will give you
a volume of 720 cm^3
Volume of a square based pyramid = 1/3 Area of base x height
Your base being square has an area of 144 cm^2
Therefore:

     Volume = 1/3 Area x height
     720 cm^3 = 1/3 x 144 x height
  Multiply both sides by 3
     2160cm^3 = 144 x height
  Divide both sides by 144
       Height = 15 cm
   Hope this helps.
          :-)
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