how far from the centre of a circle is a chord of length 18c

how far from the centre of a circle is a chord of length 18c Consider circle with centre O.AB is a chord of the circle.AO How far is the centre of the city from here? how far is Daisy's home from the centre of the cty how far is it to the centre of the earth? Determine the centre of a circle which passes through points Is it easy ( )a bus to the city centre from here Yes ,of cou 麻烦给解下物理题.A small bubble is formed at the centre of a glass c It is not the length of a street. ---_____(how long还是how far）is the youth centre from here?--- Given an arc of length 144mm on a circle of radius 120mm. Fi the post office is ( ) our school Afar of B far away C far a