1.The area of a circle is 2464 sq. cm, then its diameter is given by
2.If the area and circumference of a circle are numerically equal, then its radius is
3.The length of a rectangular field is 23 m more than its breadth. If the perimeter of the field is
4.The area of a sector of a circle with radius r, making an angle of x° at the centre is
5.If O is a fixed point and Q is a point which moves in such a way that the distance OQ remains constant, then the locus of Q is called