Official
The people in a Representative's district are called constituents.
The name of the content basketball before it was called basketball is Soccer ball
Sometimes these are called the "representative" elements.
A republic is also called a representative democracy.
NO
The black linings on a basketball are called the seams.
The representative of Her Majesty the Queen, in each province, is called the Lieutenant Governor.
If you mean what sized basketball, then it is a size 6 for any girls playing representative basketball, and size six for boys playing representative basketball until under 16's at which stage they will up-size to a size seven ball. in some organizations grade 1 and 2 use size 5 but the rule varies.
We call a representative to a foreign country an ambassador.
delegates
it is called a congressional district
A common name for a basketball ground would be a basketball court.