... sector goes like this A =(1/2)(r^2)(θ) where A is the area of a sector , r is the radius, and θ is the Central angle solving for θ: multiply the equation to 2 so that we can cancel 1/2 2A=(r^2)(θ) divide both sides by r^2...

2 Answers · Science & Mathematics · 16/09/2010

... 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

... also assume that you know how to find the area of a circle of diameter 50 metres... area by 26 to find the area of each sector . Similarly, you must know... of a single sector using the formula (theta x r²) / 2 (theta...

1 Answers · Science & Mathematics · 19/12/2007

You will need several formulas

**to**solve this:**area of the**segment =**area of the sector**-**area of the**triangle bound by**the**chord and**the**radii * you have**to**...3 Answers · Science & Mathematics · 23/07/2008

Area of a sector defined by (r, dθ) is...1/2) r^2 dθ Substitute the formula for r, and the integrand is: 162...θ Integrate this from θ = 0 to θ = pi/18 The answer is...

1 Answers · Science & Mathematics · 04/06/2010

...6 sqrt(pi).

**The formula**you quote gives**the area of the**other**sector**, which subtends 240...**the**unshaded**sector**you have**to find**. It isn't really...question. In that case:**a**= pi r^2 (1 - 120 / 360) = 2pi...1 Answers · Science & Mathematics · 27/02/2008

...

**the**shape into known shapes (square, rectangle, circle, and sectors ) and use formulas**to find the area**. Other way**to**put it in**a**graph and count no**of**squares (sq in or sq cm graph)2 Answers · Science & Mathematics · 13/10/2008

... would be

**a**segment**of a**circle.**The area**is found by taking**the area of the sector**and subtracting**the area**...**of**triangle: Heron's**Formula**s = (20 + 20 + 14)/2 = 27**A**...3 Answers · Science & Mathematics · 16/11/2010

**Area of a**circle = Pi * (radius squared) So**area of a sector**= (Angle**of the sector**/ 360) ***Area of a**circle So**area of a sector**= (Angle**of the sector**/ 360) * Pi * (radius squared) BART4 Answers · Science & Mathematics · 20/05/2008

...unknown angle

**to**360 degrees should be**the**same as**the**ratio**of the area of the sector to the area of the**circle. First,**find the area of the**circle**of**radius 5.2:**A**= pi(5.2)^2 = 84.95 Then solve**the**following proportion: x/360...4 Answers · Science & Mathematics · 11/11/2008