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**A**= pi * r^2**A**= pi * 10^2**A**= 100 * pi**The**circumference**of the**whole circle is: d = 2r d...pi * 20**The**ratio between**the area of the**circle and**the area of the sector**is**the**same as**the**ratio between...2 Answers · Science & Mathematics · 21/06/2010

... We also know that a circle has 360° We're given the area of the sector as 24 π in² and we're asked to find out the measurement of the central angle...

3 Answers · Education & Reference · 20/05/2014

**Area of the sector**(**A**) /**Area of the**Circle (PI * r^2) = central angle measure / 360...1 Answers · Education & Reference · 18/04/2012

First

**find the**angle**of the sector**, in radians or degrees.... For example**a**60 degree**sector**has fraction... that fraction by pi * r^2. (**Area of the**whole circle)2 Answers · Science & Mathematics · 18/07/2009

(30/360)*π(4)^2 Find area of 30 out of the 360 degrees and use area formula

1 Answers · Science & Mathematics · 18/02/2012

... will also learn

**how to find the area of a sector**, which is**a**slice... by 3.14**to find the**diameter. With**a**cylindrical object, like**a**...**a**ruler across**the**top**of the**can. Keep...12 Answers · Education & Reference · 09/11/2009

...pi*r^2. so

**the area of**any**sector**is just**the**equivalent fraction**of the area**.**the**full circle is...**area**fraction is equivalent**to**70/360 times**the**total**area**.**A**= theta/360 * pi * r^2**A**...1 Answers · Education & Reference · 07/06/2013

pie*radius^2 (if you have

**the**diameter half it**to find the**radius) this will give**the area of the**circle (take pie as 3.142) then go: angle**of sector**(which sould be given) divided by 360 degrees multiply this by**the area of the**circle2 Answers · Science & Mathematics · 04/02/2007

**sector area**= pir^2*(central angle/360) if angle is in degrees =pir^2*(central angle/2pi) if angle is in radians**area**= pi 16^2 (240/360) = 256(2/3)pi = 512pi/33 Answers · Science & Mathematics · 11/04/2010

...two radii

**of a**circle and**the**arc**the**two radii subtend.**The**arc**of the**circle is equal...or radians**to the**central angle ...each r,**the**are**of sector**is simply**area of**entire circle ...2 Answers · Science & Mathematics · 19/05/2011