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**Area of**circle:**A**= Pi*r^2**Area of sector**: S =**A**/6 = (Pi/6)r^2 solve the last equation for... and do the calculation on your**calculator**app. answer will be in units**of**...4 Answers · Science & Mathematics · 23/09/2015

The area of a sector is given by the equation A = ½r²...(8.5)²(8π/45) = 20.176 Make sure your calculator is in the appropriate mode.

2 Answers · Education & Reference · 30/01/2010

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**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

**Area of sector**= Angle/360 x (pi x radius^2) (**Area of sector**x 360)/ (Angle x pi) = radius^2 Take the root**of**this...22.5 x 3.14)] You work it out. I don't have**a calculator**.6 Answers · Science & Mathematics · 05/08/2007

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**of**the circle = pi(4)^2 = 16pi 2/3**of**the circle = (2/3)(16)pi On to the**calculator**and work this out Next time:**Area of a sector of a**circle = (central angle)/(full rotation) (pi)(r^2) angle can be in degrees...2 Answers · Science & Mathematics · 12/10/2009

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**area of sector**is equal to the degree(70) over 360...225 Or 9.768(the 8 has**a**line over top to show it goes on... supposed to round, my**calculator**shows 9.7688888893 Answers · Science & Mathematics · 20/03/2013

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**area of**the triangle, and therefore the triangle is 3 / 4 the**area of**the**sector**. 4 sin(t) = 3t You'll need**a calculator**cleverer than mine to solve that, but using Excel ...2 Answers · Education & Reference · 09/05/2008

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**Calculator**for figuring this out. Circle**Sector Area**= (Radius ... answer is**a**circle**sector area of**221.22048269028, or 221.220...1 Answers · Science & Mathematics · 15/10/2010

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**a**fraction**of a**whole circle**of**360 degrees**Area of**whole circle = pi x r^2 = pi x 60^2... = 25 x 60^2 x pi /360 using**calculator Area**= 785 . 4 correct to 1 decimal...2 Answers · Science & Mathematics · 01/06/2011

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**of sector**/ angle**of**circle =**area of sector**/**area of**circle there are 360 degrees in**a**circle, but we only want 100 ...**A**= 100pi * 2.8^2 / 360 (punch**calculator**buttons here...)1 Answers · Science & Mathematics · 22/06/2009