SOLUTION: please Help!!!!!!!!!!!!! a=bh/2 trying to find missing base a= 81, h=9

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Question 51978: please Help!!!!!!!!!!!!!
a=bh/2 trying to find missing base
a= 81, h=9
Answer by stripepanther1989(2) About Me  (Show Source):
You can put this solution on YOUR website!
replace the factors with what you know.
A=bh(1/2)
81=b(9)(1/2)
divide both sides by nine
9=b(1/2)
multiply both sides by 2 two get rid of hte 1/2
18=base