The circumference of a circle is 28 times3.14. what is the radius

In the diagram of circle a what is m

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base