The area of a sector of circle of radius R swept by a central angle Θ (in radians... πR². Notice that the ratio gives the above formula A = πR²/(2π/Θ) = ½ R²Θ. Now...

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

...proportional to the ratio

**of**its angular measure to the entire angular measure**of**the**circle**. Letting the**area of**the**sector**be**a**, then**a**= (80/360)**A**, where**A**is the**area of**the**circle**. ...2 Answers · Education & Reference · 21/08/2011

### 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

Hmm sectors , huh? Well heres an example: Find the

**area of**one-fourth**of a circle**that has**a**radius**of**2.2 inches. Since the**area of a Circle**...2 Answers · Education & Reference · 08/05/2007

...3) so you multiply your area (12π) by 3 to get the total area of the circle Area of circle equals 12π x 3 = 36π now you know from elementary school that a circle 's area is πr^2 so πr^2=36π divide both sides by π...

4 Answers · Science & Mathematics · 15/11/2010

... to be brain-dead. So the above answer isn't legit. The

**area of**one**sector**is: (angle/360) * pi * r^2 and the second is: (angle/360...1 Answers · Science & Mathematics · 10/05/2010

...it is

**a**fraction**of a**complete**circle**. You need to find the fraction**of a circle**. It is 34 / 360 (based on the angle). So the**area of**this**sector**is: 34 / 360 x pi x r^2 = 34 / 360 x 3.1416 x 5 ^ 2 = 7.42 cm(...6 Answers · Science & Mathematics · 20/04/2008

...this. First method: (By formula) Note that the formula for the

**area of a sector**is 1/2 * r^2 * theta, where r is the radius**of**the**circle**(which is 4m in this case) and theta is the angle formed by the...1 Answers · Science & Mathematics · 03/07/2013

...equation simply makes use

**of**the Law**of**Cosines to determine**a**couple**of**angles, in which one**circle sector**is added to another, minus**a**redundant triangle (where the**circle**sectors ...4 Answers · Science & Mathematics · 19/01/2008

23 degrees 12 minutes = 23.2° Area = (23.2/360) π (5.9²) cm² Area = 7.05 cm²

3 Answers · Science & Mathematics · 17/07/2008