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In trapezoid ABCD, ¯AB¯CD. Find the area of the trapezoid.

 

 Apr 28, 2024
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To find the area of trapezoid ABCD, we can use the formula for the area of a trapezoid, which is given by:

Area=12×(sum of the lengths of the bases)×(height)

In this case, the bases are AB and CD, and the height can be found using trigonometry.

Given:
- AB = 96
- CD = 44
- ∠D = 110°
- ∠B = 55°

First, let's find the height of the trapezoid, which is the perpendicular distance between AB and CD. We can use the law of sines to find the height.

sin(55°)CD=sin(110°)AB

sin(55°)44=sin(110°)96

Now, let's solve for the height:

Height=sin(55°)×44sin(110°)

Height0.8192×441

Height36

Now, we have the height. Let's calculate the area using the formula for the area of a trapezoid:

Area=12×(AB+CD)×Height

Area=12×(96+44)×36

Area=12×140×36

Area=70×36

Area=2520square units

So, the area of trapezoid ABCD is 2520 square units.

 Apr 28, 2024

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