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21 Nov 2018, 01:39
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C
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Difficulty:
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84% (01:54) correct
16%
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wrong
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The circumference of the circle with center O is 15π. LMNO is a parallelogram and c = 108. What is the value of d ?
A. 15π
B. 9π
C. 3π
D. 2π
E. It cannot be determined from the information given.
Attachment:
c11c_r110.png [ 22.51 KiB | Viewed 1882 times ]
21 Nov 2018, 02:56
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parallelogram opposite angles are equal.
C=108, Angle N= 108
Angle at O + angle at M= 360-216=144
Angle O= 72 Degree.
Section d is 72/360 part of circle= 0.2
Circumference of circle =15 π
Section d= 15 π * 0.2= 3 π
Answer C.
C=108, Angle N= 108
Angle at O + angle at M= 360-216=144
Angle O= 72 Degree.
Section d is 72/360 part of circle= 0.2
Circumference of circle =15 π
Section d= 15 π * 0.2= 3 π
Answer C.
21 Nov 2018, 03:20
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Bunuel
The circumference of the circle with center O is 15π. LMNO is a parallelogram and c = 108. What is the value of d ?
A. 15π
B. 9π
C. 3π
D. 2π
E. It cannot be determined from the information given.
Attachment:
c11c_r110.png
Opposite sides of a IIogram area equal so 108*2+2x=360
solve for x we get 72
Length of sector 72 at would be 72/360 * 15pi= option C 3 pi..
