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The equation for the area of a trapezoid is a = 27. if a = 18, b1 = 5, and b2 = 7, what is the height of the trapezoid? oh = 1.5 oh =3 oh = 6 oh=7

User Bing Lu
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7.2k points

2 Answers

3 votes

Final answer:

The height of the trapezoid is 3 units.

Step-by-step explanation:

The formula for the area of a trapezoid is A = (b1 + b2) * h / 2, where b1 and b2 are the lengths of the parallel bases and h is the height of the trapezoid.

Given A = 18, b1 = 5, and b2 = 7, we can substitute these values into the formula and solve for h.

18 = (5 + 7) * h / 2

18 = 12h / 2

18 = 6h

h = 18 / 6

h = 3

Therefore, the height of the trapezoid is 3 units.

User Gngolakia
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7.3k points
1 vote

The correct option is oh = 3.

The formula for the area A of a trapezoid is given by:


\[ A = (1)/(2)h(b_1 + b_2) \]

where h is the height, and
\(b_1\) and \(b_2\) are the lengths of the bases.

In your case, you have
\(A = 18\), \(b_1 = 5\), and \(b_2 = 7\). Let's substitute these values into the formula:


\[ 18 = (1)/(2)h(5 + 7) \]

Now, solve for h:


\[ 18 = (1)/(2)h(12) \]

Multiply both sides by 2 to isolate h:


\[ 36 = 12h \]

Divide both sides by 12 to find h:


\[ h = 3 \]

So, the height of the trapezoid is 3.

User Dan Jacka
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8.0k points