SOLUTION: the formula A= 1/2bh gives the area A for a triangle Solve for H Solve for B Find H if B= 10in A= 80in2

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Question 18578: the formula A= 1/2bh gives the area A for a triangle
Solve for H
Solve for B
Find H if B= 10in A= 80in2
Answer by wuwei96815(245) About Me  (Show Source):
You can put this solution on YOUR website!
A = 1/2bh
Multiply both sides by 2
2A = bh
Divide both sides by b
2A/b = h

A = 1/2bh
Multiply both sides by 2
2A = bh
Divide both sides by h
2A/h = b

If b = 10" and A = 80 inches2, what is h?
Use substitution
2A/b = h
2(80)/10 = h
160/10 = h
16" = h