SOLUTION: the hieght of a triangle is half the length its base. the area of the triangle is 12.25 cm.what is the hieght.i was absent the day my teacher was teaching it and now she is absent.
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Question 119559This question is from textbook pre-algebra
: the hieght of a triangle is half the length its base. the area of the triangle is 12.25 cm.what is the hieght.i was absent the day my teacher was teaching it and now she is absent.please show me what i need to do
This question is from textbook pre-algebra
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
area=bh/2
height=b/2
12.25=(b*b/2)/2
12.25=(b^2/2)*1/2
12.25=b^2/4 cross multiply.
b^2=49
b=sqrt49
b=7 answer for the base.
12.25=7h/2
7h=25
h=25/7 answer for the height.
proof
12.25=(7*25/7)/2
12.25=25/2
12.25=12.25
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