114k views
5 votes
B

68°
A
E
D
EB
15. What is the length of CD? (Use 3.14 for $7)
a
31.68
b
29.31
23.14
17.79

B 68° A E D EB 15. What is the length of CD? (Use 3.14 for $7) a 31.68 b 29.31 23.14 17.79-example-1
User Gant
by
8.3k points

1 Answer

7 votes

Answer:

b = 29.31

Explanation:

Given:

m<CEB = 68°

EB = radius = 15

Required:

Length of arc CD

Solution:

Length of arc CD = θ/360 × 2πr

Where,

θ = 180° - 68° = 112° (angles on a straight line)

π = 3.14

r = radius = 15

Plug in the values

Length of arc CD = 112/360 × 2 × 3.14 × 15

= 29.3066667

≈ 29.31

User John Vinyard
by
7.7k points

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