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Answer:
The correct answer is 3πcm
Step-by-step explanation:
The length of an arc is calculated using the formula P=∅/360×2πr
where ∅is the angle the arc subtends at the center of the circle, and r is the radius of the circle of which the arc is part.
2r gives the diameter which from the diagram corresponds to AB=36 cm
therefore P=30/360×π×36
=3πcm
You need to use the equation Distance (miles)=Rate (miles/hour) x Time (hours)
Brandi: 2.5 miles=rate (1/2 hour) r=5 miles per hour
Sharna=3.5 miles= rate (3/4 hour) r = 7 miles per hour.
Therefore brandi jogged at a slower rate.
Answer:
Step-by-step explanation:
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