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  1. 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

  2. ...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

  3. 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

  4. 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

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

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

  6. 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

  7. ... 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

  8. ... 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

  9. ... 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

  10. ... 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

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