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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. The clock face is 360degrees giving: 1min = 6degress or 1/60 of the area 1hr = 30degress + 0.5degress(each minute after the hour) or 1/12 + 1/720 per minute Knowing A =pi*r^2 for the whole area and: r for the minute hand is 8.4cm r for the hour...

    1 Answers · Science & Mathematics · 05/11/2013

  3. The sector of a circle has an area of 24π in^2 and...find out the measurement of the central angle. To...this, simply set up a proportion ... to area ..........degrees...

    3 Answers · Education & Reference · 20/05/2014

  4. ...complete circle has three hundred sixty degrees, so a sixty degree angle sector has area that is one-sixth the area of a full circle . Area of circle : A = Pi*r^2 Area of sector : S...

    4 Answers · Science & Mathematics · 23/09/2015

  5. ... by two radii of a circle and the arc the two radii subtend. The arc of the circle is equal in... each r, the are of sector is simply area of entire circle times x...

    2 Answers · Science & Mathematics · 19/05/2011

  6. ...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

  7. ...re supposed 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

  8. Area of the sector ( A ) / Area of the Circle (PI * r^2) = central angle measure / 360 Solve it as a proportion like...

    1 Answers · Education & Reference · 18/04/2012

  9. ... 5pie cm." I will assume it should state: " The area of a sector is 5pie cm^2." Make a ratio involving the areas and angles of the arc and the entire circle : (Angle of the arc / Angle of the entire circle ) = ( Area of arc...

    2 Answers · Science & Mathematics · 20/11/2013

  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...

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

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