



 
Hi Lisa, There is something strange about this problem or at least about the way I am interpreting it. Are the lengths of the sides of the triangle given as 4', 3' and 5'? If so, then since 3^{2} + 4^{2} = 5^{2}, the converse of Pythagoras theorem tell you that this is a right triangle with the right angle between the sides of length 3' and 4'. Thus if the base is the side of length 4 ' then the height is 3'. Penny  


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