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What is the length of the arc shown in​ red?
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What is the length of the arc shown in​ red?

What is the length of the arc shown in​ red?-example-1
User JosepB
by
3.3k points

1 Answer

1 vote

Answer:

≈ 18.8 cm

Explanation:

The arc length is calculated as

arc = circumference of circle × fraction of circle

The central angle is equal to the arc subtending it, that is 60°

arc = 2πr ×
(60)/(360)

= 2π × 18 ×
(1)/(6)

= 36π ×
(1)/(6)

= 6π ≈ 18.8 cm ( to 1 dec. place )

User Vladimir Salin
by
3.8k points
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