The

**area of a circle**is pi*r^2 and there are 360 degrees in**a circle**- that's all the information you need (you can look up**a**value for pi if your calculator doesn't have it).1 Answers · Science & Mathematics · 30/05/2013

...now instead

**of**finding the**area of**the whole pizza, you will only find the**area of**the 1 slice. since your radius is 5 cm then you need to take the**area**formula for**a circle**and plug the values you have**A**= Pi * r^2 for your...3 Answers · Science & Mathematics · 13/08/2011

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...can be found by the formula**A**= pi*r^2. Now, what you...7 Answers · Science & Mathematics · 13/01/2009

The area of a sector given the radius of the sector and the angle θ (in radians) is...2. Since θ = 195° = 13π/12 radians and r = 45, the area of the sector is: A = (1/2)θr^2 = (1/2)(13π/12)(45)^2 = 8775π/8 in^2. I hope this ...

3 Answers · Science & Mathematics · 09/09/2010

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

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

Hi John 1. A sector of a circle has area 90cm^2 and central 0.2 radians. ...2π*r = 8.4 r = 20 cms So Area of sector = θ/360*π*r^2 Area of sector = 24/360...

2 Answers · Science & Mathematics · 16/11/2010

... 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

... of the entire circle is πr² = π·21² = 441π mi². A 60° sector represents 60°/360°, or 1/6 of the circle . Therefore, the area of the sector = 1/6 of 441π mi² = 147π/2 mi² ≈ 230.9 mi²...

6 Answers · Science & Mathematics · 10/07/2013

... DC*BD Area ABC = ½... AB*AC*sin( A ) now in your circle AB = AC = r and...the angle at the centre of the circle Hence: A ...

4 Answers · Science & Mathematics · 17/09/2008

... of the entire circle is πr² = π·21² = 441π mi². A 60° sector represents 60°/360°, or 1/6 of the circle . Therefore, the area of the sector = 1/6 of 441π mi² = 147π/2 mi² ≈ 230.9 mi²...

2 Answers · Science & Mathematics · 27/02/2017