1.

The angle of a sector of a circle is `108^(@)` and radius of the circle is 15 m. The ratio of the circumference of the circle and the length of the arc of the sector is _______A. `3:10`B. `10:3`C. `1:3`D. `3:1`

Answer» Correct Answer - B
`"The required ratio"=2pir:(2pirxx108)/(360)`
`=360:108=10:3`


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