SOLUTION: How many inches long is the altitude of a regular triangular pyramid the base of which is 12 inches on a side and its volume is 103.8 cubic inches? Round off the answer to the near
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Question 1198240:  How many inches long is the altitude of a regular triangular pyramid the base of which is 12 inches on a side and its volume is 103.8 cubic inches? Round off the answer to the nearest integer. 
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 
.
V = 1/3 bh = 103.8in^3  (b is the area of the base)
Given: the base of which is 12 inches on a side:  b = 144in^2
      
         h =  = 2.1625in 
 0r 
h= 2in (nearest integer) 
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