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Measure of an arc of a circle is 80^@ an...

Measure of an arc of a circle is `80^@` and its radius is 18 cm. Find the length of the arc. `(pi= 3.14)`

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The correct Answer is:
`25.12 cm`.
Measure of an arc of a circle `(theta)= 80^@`
its radius (r ) = 18 cm.
Length of the arc `= theta/360 xx2 pir`
`= 80/360 xx2 xx3/14 xx18`
`= 3.14 xx8`
`=25.12 cm `
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