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1. ### need help with area of a sector of a circle ?

first of all, "theata" is ... saying is that A = 1 / TR, this is not the correct formula in actuality, A = 1 /2 * T...

1 Answers · Science & Mathematics · 18/06/2008

2. ### Area of a sector of a circle .?

...angle, not length. What you have is an arc that subtends an angle of 105°. Let θ be the subtended angle in radians. θ = 1.832595715 r = 18 cm area = r²(θ-sinθ)/2 = 18²(1.832595715-sin(1.832595715))/2 = 324(1.832595715...

1 Answers · Science & Mathematics · 12/04/2009

3. ### Area of a sector of a circle .?

... if you use proportions. Find the area of the entire circle A = π18² = 324π, for the entire 360° Now use the proportion to find the area of the sector , x 360°/324π = 105°/x 360x = 34020π x = 94.5 π in² (the area of the...

1 Answers · Science & Mathematics · 08/03/2009

4. ### Find the area of a 120° sector of a circle whose radius is 6.?

In general, to do area of sector problems, you want to find the total area of the circle and then find only the area of that... circle can be found by the formula A = pi*r^2. Now, what you...

7 Answers · Science & Mathematics · 13/01/2009

5. ### how to derive an arc leght and area of a sector from the formulas of a circle ?

... in radians, arc length is simply rx. The area of a circle is pir^2 So area of a sector x/360 *pir^2 if x measured in degrees, and is xr^2/2 if...

1 Answers · Science & Mathematics · 13/11/2007

6. ### find the sector of a circle ?

... of the sector having a central angle of 150 degrees and has a radius of 8 meters. formula of the area of the sector = PI*R^2*CENTRAL ANGLE over 360 degrees...

7. ### Find the area of a sector of a circle of radius 12 inches formed by a central angle of 90° **10 points**?

The ‘ area of a circle sector ’ formula is πr^2*θ/360, where θ is measured in degrees...

4 Answers · Science & Mathematics · 19/12/2010

8. ### Help! on area of a sector of a circle ?

The area is theta/2 for the unit circle . It's that simple. Or r^2*theta/2 if you want. Theta is, of course, in radians.

2 Answers · Science & Mathematics · 31/10/2011

9. ### how to derive the formula for area of a circle ?

To derive the formula for a circle C with radius r centered at (0, 0), The area of C is the area A ...we divide A into many equal sectors , each with arc-length Δθ...

6 Answers · Science & Mathematics · 15/05/2009

10. ### Find the area of a sector of a circle of radius 1 foot swept by the angle 2pi/7.?

The area of a sector of circle of radius R swept by a central angle Θ (in... circle 2π/Θ of the area of the whole circle ...ratio gives the above formula A = πR²...

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