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  related to: area of a sector of a circle
  
  1. maths, prove area of circle ?
  
  ...3) Therefore, the area of maximum shape for a given perimeter must have...convex shape. 4) Only the circle has this property. ... circle . Imagine that the sectors of the circle is ...
  
  5 Answers · Science & Mathematics · 04/12/2007
  
  2. surface areas of solids i need help asap please?
  
  let the radius of the circle be r circumference = 2pi r and the edge of the sector will be 2pi r/3 Next, we take that edge and turn it into a new circle , the base of the cone. circumference is now 2pi r/3 so diameter of the new circle ...
  
  1 Answers · Science & Mathematics · 19/01/2013
  
  The area of a circle is Pi x R2 = 3.14 x 9 x 9 = 254.5 sq in. If the... area of the section is 42.4 in sq. If you double the central angle, the area doubles.
  
  2 Answers · Science & Mathematics · 17/04/2011
  
  4. How can I divide a circle into equal parts of a small central angle and find its area using formula 22/7*r*r?
  
  The area of each segment will be: (22/7*r*r)/n where n is the number of equal sectors you have divided it into. So, yes the formula will work.
  
  1 Answers · Science & Mathematics · 06/06/2008
  
  5. i dont under stand surface area and volume..................?
  
  ...respectively. Lateral surface area of a cone r and l are the radius and slant height, respectively. Circular sector r and θ are the radius and angle... disk is the area enclosed in a circle .
  
  4 Answers · Science & Mathematics · 02/10/2006