A circumference
A circumference
It is called a radius
Assuming that primeter is your way of spelling perimeterand rectangel is your way of spelling rectangle, the answer is 22 metres.
If you're asking for the PRIINISTER its Rhodri Morgan
a hemisphere
semicircleA half circle is called a semicircle.Half a circle is a semi-circle
you add up the sides of the figure.
The perimeter of the square is 40 inches.
A part of a circle between two points on a circle is called is called an arc.
Half a circle is called a semi-circle. Sometimes it is called a half-moon.
A squashed circle is called an elipse.
the interior of a circle is called a cabret