Answer:
Triangle: a plane figure with three straight sides and three angles.
Circumference of entire circle = 2 * PI * 10
circumference of entire circle =
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62.832 feet
81 degrees is (9/40) of a circle
62.832 * </span></span></span><span>(9/40) = </span>
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14.1372
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Source:
http://www.1728.org/radians.htm
Answer:

Step-by-step explanation:

Answer:
x ≈ 15.9
Step-by-step explanation:
a straight line is equal to 180 degrees
so we now know that 9x + 8 + 29 = 180
combine like terms 9x + 37 = 180
now subtract 37 from both sides 9x = 143
now divide both sides by the value of 9 x ≈ 15.9