(1)⊙O1和⊙O2相切,⊙O1的半径为4cm,圆心距为6cm,则⊙O2的半径为______;
(2)⊙O1和⊙O2相切,⊙O1的半径为6cm,圆心距为4cm,则⊙O2的半径为______.
网友回答
解:(1)当⊙O1和⊙O2内切时,⊙O2的半径为6+4=10cm;
当⊙O1和⊙O2外切时,⊙O2的半径为6-4=2cm;故⊙O2的半径为2或10cm.
(2)当⊙O1和⊙O2内切时,⊙O2的半径为6+4=10cm;
当⊙O1和⊙O2外切时,⊙O2的半径为6-4=2cm;故⊙O2的半径为2或10cm.
故