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15 votes
15 votes
write the formula for the area of a triangle, A = 1/2bh in terms of h. Find the height of a triangle when A = 18 in.² and b = 9 in. Please give explanation thank you :)​

User Mina Hafzalla
by
2.5k points

2 Answers

27 votes
27 votes


\\ \rm\Rrightarrow A=(1)/(2)bh


\\ \rm\Rrightarrow bh=2A


\\ \rm\Rrightarrow h=(2A)/(b)

Now

  • A=18in^2
  • b=9in


\\ \rm\Rrightarrow h=(2(18))/(9)


\\ \rm\Rrightarrow h=(36)/(9)


\\ \rm\Rrightarrow h=4

User Stefano Ortisi
by
3.0k points
23 votes
23 votes

Answer:

2A/b = h

4 inches = h

Explanation:

A = 1/2bh in terms of h

Multiply each side by 2

2A = bh

Divide by b

2A/b = h

Let A = 18 and b = 9

2*18/9 = h

4 = h

User John Donn
by
2.7k points
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