My Math Forum Converting degrees to radians and finding an area of a sector of a circle

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 March 31st, 2015, 06:43 AM #1 Member   Joined: Feb 2015 From: Planet Zorg Posts: 67 Thanks: 3 Converting degrees to radians and finding an area of a sector of a circle Hi guys, Ok so 52 degrees in radians is 0.91 (to 2 s.f.) but what does it mean to leave my answer in terms of pi? And then to use my answer from above to find the area of a sector of a circle of radius 16cm and angle 52 degrees?! Now I'm really out of my depth, lol..
 March 31st, 2015, 06:46 AM #2 Senior Member   Joined: Jan 2012 From: Erewhon Posts: 245 Thanks: 112 $180$ degrees is $\pi$ radian, so $52 \mbox{ degrees} = 52 \times \pi/180 \mbox{ radian}$ Area of a sector of radius $r \mbox{ cm}$ and angle $\theta \mbox{ radian}$ is $\theta r^2/2 \mbox{ cm}^2$ Thanks from matheus Last edited by CaptainBlack; March 31st, 2015 at 06:50 AM.

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