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  • Length of an arc of a circle of radius 5 cm subtending central angle measuring 45o isOption: 1 <img alt="\frac{\pi}{4}cm" src="https://lea

Length of an arc of a circle of radius 5 cm subtending central angle measuring 45o is

Option: 1

\frac{\pi}{4}cm


Option: 2

\frac{5\pi}{2}cm


Option: 3

\frac{5\pi}{4}cm


Option: 4

None of these


Answers (1)

best_answer

Let s be the length of the arc

s=r\theta

r = 5 cm

\theta=45^\circ=\frac{\pi}{4}

s=5\times \frac{\pi}{4}cm=\frac{5\pi}{4}cm

 

Posted by

Devendra Khairwa

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