Standard form for the equation of a circle is (x−h)2+(y−k)2=r2. The center is (h,k) ... ... <看更多>

There's an interesting method using which you can approximately find the area. Split up the circle into many small sectors, and arrange them ... ... <看更多>

Apr 17, 2018 - The complete list of 2D & 3D geometry & shapes basic formulas cheat sheet for PDF download. ... <看更多>

In general, x and y must satisfy (x - center_x)² + (y - center_y)² < radius² . Please note that points that satisfy the above equation with < replaced by ... ... <看更多>