You know

**how**you take**the**circumference times**the**angle divided by 360, so get**the**arc length? Well, you do**the**same thing for**the area of the sector**except you take**the AREA**times**the**angle divided by 360.1 Answers · Science & Mathematics · 18/05/2008

...4 divided by 2 pi = 7/8 multiply

**the**circle's**area**by 7/8**to**get**the sector**'s**area**: 7/8 * pi * 81 cm^2 = 81 * 7 / 8 cm^2**to**get**the**arc length, consider**the**circumference**of a**circle: 2 * pi * r 2 * pi * 9 cm = 18 * pi cm from**the**calculation up above, we know that...3 Answers · Science & Mathematics · 16/03/2011

...fraction

**of the**semicircle that**the sector**takes up. Then...radius^2), since that's**the area of the**whole semicircle. That is, half**of a**circle's**area**.**The**other option is**to**divide**the**angle by 360, without...1 Answers · Science & Mathematics · 27/02/2017

πr².(θ/2π) =r²θ/2

3 Answers · Science & Mathematics · 11/04/2010

...fraction

**of the**semicircle that**the sector**takes up. Then...radius^2), since that's**the area of the**whole semicircle. That is, half**of a**circle's**area**.**The**other option is**to**divide**the**angle by 360, without...1 Answers · Education & Reference · 28/06/2009

30/360 = 1/12

**of a**complete circle. If**the**arc is 6pi,**the**...72 pi. divide by pi**to**get**the**diameter: 72.**The**...that, or 36.**The area of the**complete circle is...**area of the sector**is 1/12th...2 Answers · Science & Mathematics · 25/01/2008

3.14 times 5

**to the**second power=78.5 rounded**to**7911 Answers · Science & Mathematics · 04/06/2008

**how**do you**find the area of a sector of a**circle when**the**angle is 135 degrees and**the**radius is 10?...but

**the**whole thing is 360. 135 / 360 = 3 / 8 = 0.375 So,**find**3 / 8**of the**total circle**to find the sector area**. 100 * (pi) * (3 / 8) = 37.5 * (pi) If you don't want**to**leave...2 Answers · Education & Reference · 02/08/2008

**Find the**total**area of the**square and**find the**total**area of the**shaded secion and subtract**the**two areas**to find the**total**area**.2 Answers · Science & Mathematics · 11/01/2012

we know

**the**full length**of a**circle is nothing but its perimeter which is 2 x pi x r and also**the**internal angles total**to**360**the**length**of**an arc in this circle with theta as angle will be 2 x pi x r...1 Answers · Science & Mathematics · 12/06/2009