# Finding the Area of a Triangle for the Area of a Segment?

I'm looking for the area if a segment. I know that the formula for the area of a triangle is 1/2bh but for some reason, my answers are turning out wrong.
Triangle 1:
Side - 11km
Angle - 60 degrees
Judging by the fact the one angle is 60 degrees, I assumed that it was equilateral.
I got the area to be...
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I'm looking for the area if a segment. I know that the formula for the area of a triangle is 1/2bh but for some reason, my answers are turning out wrong.

Triangle 1:

Side - 11km

Angle - 60 degrees

Judging by the fact the one angle is 60 degrees, I assumed that it was equilateral.

I got the area to be 52.25 km...?

And for the other triangles:

Side - 25 yd

Side - 25 yd

Angle - 45 degrees

And

Side - 1

Side - 1

Angle - 90 degrees

Triangle 1:

Side - 11km

Angle - 60 degrees

Judging by the fact the one angle is 60 degrees, I assumed that it was equilateral.

I got the area to be 52.25 km...?

And for the other triangles:

Side - 25 yd

Side - 25 yd

Angle - 45 degrees

And

Side - 1

Side - 1

Angle - 90 degrees

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