Use the line. line it up line up the triangle
Show me the picture of the octagon. But remember that if the diameter is shown than always do half of the diameter to get the radius. Hope this helps
Circumference of entire circle = 2 * PI * radius
2 * PI * 3 =
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<span>
<span>
18.8</span></span></span>5 meters
a 30 degree arc is (30/360) or 1/12 of a circle.
So the arc equals (18.85 meters / 12) or
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<span>
<span>
1.57</span></span></span> meters.
The surface area is 540 square feet because you can find the area of each face (lw) and that is 90. 90*6=540
