If the radius of a circle is 7m, then the area of the semi circle is

A rectilinear figure of four sides is called _________

Number of sides of a decagon is

If the area of circle is 144cm², then the area of its quadrant is ________

A polygon in which at least one angle is more than 180^o is called a ___________

Quadrant of a circle is __________ of the circle.

If the area of a semicircle is 84cm² , then the area of the circle is _________

Area of a semi circle is ________ times the area of the circle.

If  length of a rectangle is 8cm and its area is 56cm² , then the breadth is