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Art [367]
3 years ago
10

(answer with "sometimes, always, or never true") A decimal number is an irrational number.

Mathematics
1 answer:
xxMikexx [17]3 years ago
7 0

Answer:

Step-by-step explanation:

Sometimes.  If the decimal never repeats itself and never ends, like pi, it is irrational.  But if the decimal is .5 or .333333333333333... it either terminates (ends) or repeats itself forever, making it rational.

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If the radius of a circle is 3 meters, how long is the arc subtended by an angle measuring 30°?
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Circumference of entire circle = 2 * PI * radius
2 * PI * 3 = <span> <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 <span> <span> <span> 1.57</span></span></span> meters.


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