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Problem 285

Let \(\mathrm{AB}\) be an arc of a circle whose center is \(0 . \mathrm{AB}\) is of length 11 , and \(\mathrm{m} \angle \mathrm{AOB}=10^{\circ}\). (The length of a circular arc is proportional to the central angle which cuts the arc.) a).Compute the circumference of the circle. b). Approximating \(\pi\) by \(22 / 7\), compute the diameter of the circle.

Expert verified

a) The circumference of the circle is 396 units.
b) Approximating π by 22/7, the diameter of the circle is 126 units.

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Chapter 15

Find the diameter of a circle whose circumference is \(628 \mathrm{ft}\). [Use \(\pi=3.14\) ]

Chapter 15

Find the circumference of a circle whose radius is 21 in. \([\) Use $\pi=(22 / 7)]$

Chapter 15

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Chapter 15

Find, to the nearest tenth of an inch, the length of an arc of \(60^{\circ}\) in a circle whose radius is 12 in.

Chapter 15

In a circle whose radius is 8 inches, find the number of degrees contained in the central angle whose arc length is \(2 \pi\) inches.

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