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555-605 (Medium)|   Geometry|      
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Bunuel
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If the radius of the circle with centre O is 7 and the measure of angl 18 May 2016, 02:12
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25% (medium)

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76% (01:39) correct 24% (01:49) wrong based on 297 sessions

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If the radius of the circle with centre O is 7 and the measure of angle AOB is 100, what is the best approximation to the length of arc AB ?

A. 9
B. 10
C. 11
D. 12
E. 13

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D
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If the radius of the circle with centre O is 7 and the measure of angl 18 May 2016, 03:54
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The arc length : 14 π * (100/360) = 12
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If the radius of the circle with centre O is 7 and the measure of angl 18 May 2016, 08:23
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Bunuel

If the radius of the circle with centre O is 7 and the measure of angle AOB is 100, what is the best approximation to the length of arc AB ?

A. 9
B. 10
C. 11
D. 12
E. 13

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p004-10.gif
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Measure of the arc =\(\frac{θ}{360} * 2π * r\)

Measure of the arc = \(\frac{100}{360} * 2 *\frac{22}{7}* 7\)

Measure of the arc = 12

Hence answer will be (D) 12 :lol: :-D
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If the radius of the circle with centre O is 7 and the measure of angl 18 May 2016, 10:48
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Arc AB / 2 Pi r = 100 / 360 => Arc AB = 12
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If the radius of the circle with centre O is 7 and the measure of angl 08 Jul 2019, 05:48
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Bunuel

If the radius of the circle with centre O is 7 and the measure of angle AOB is 100, what is the best approximation to the length of arc AB ?

A. 9
B. 10
C. 11
D. 12
E. 13

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p004-10.gif
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given: r=7 then d=14 and circumference=14π=3.124…
so: arc AB has a length of 100/360*14π… 5/18*14π… 35π/9… aprox. 35/3=11+2/3=12

Answer (D).
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If the radius of the circle with centre O is 7 and the measure of angl 11 Jul 2019, 11:07
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Bunuel

If the radius of the circle with centre O is 7 and the measure of angle AOB is 100, what is the best approximation to the length of arc AB ?

A. 9
B. 10
C. 11
D. 12
E. 13

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p004-10.gif
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Bunuel, I have a question here , how can we assume that the question is asking for the length of minor arc AB here? only by the option it is reflecting that the question has asked for minor arc length, but if such question stem is given as DS, it will be difficult i assume that whether it has asked for major or minor arc length coz depending upon this the angle subtends at the centre will be different , hence the answer.
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If the radius of the circle with centre O is 7 and the measure of angl 12 Jul 2019, 19:09
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Bunuel

If the radius of the circle with centre O is 7 and the measure of angle AOB is 100, what is the best approximation to the length of arc AB ?

A. 9
B. 10
C. 11
D. 12
E. 13

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p004-10.gif
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The circumference is 14π, so arc AB is:

100/360 x 14π

10/36 x 14π

5/18 x 14π

70π/18 = 35π/9

Let’s round 35 to 36 and π to 3, so 35π/9 ≈ (36 x 3)/9 = 4 x 3 = 12.

Answer: D
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If the radius of the circle with centre O is 7 and the measure of angl 20 Nov 2022, 04:01
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