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

Algebra ->  Algebra  -> Expressions-with-variables -> 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       Log On

Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

   

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