Question

Calculator A circle has a radius of 21 millimeters. What is the length of the arc intercepted by a central angle that measures 80°. o 14.66 mm o 307.88mm o 98 mm o 29.32 mm 1 2 3 4 5 6 7

Please hurry and don't answer if you dont know my answers are l: A.14.66mm B.98mm
C.307.8mm. D.29.32mm​

Answer 1

arc length ≈ 29.32 mm

Explanation:

arc length is calculated as

arc = circumference of circle × fraction of circle

= 2πr ×
`(80)/(360)`

= 2π × 21 ×
`(8)/(36)`

= 42π ×
`(2)/(9)`

=
`(42\pi (2))/(9)`

≈ 29.32 mm ( to the nearest hundredth )