C-08-Q182mediumsingle_mcq
Corollary 12: if two circles touch each other internally, the distance between their centres equals—
Corollary 12: if two circles touch each other internally, the distance between their centres equals—
- athe sum of their radii
- bthe difference of their radii
- czero
- dtwice the smaller radius
ব্যাখ্যা
When two circles touch internally, one lies inside the other, so the distance between centres is the radius of the larger minus the radius of the smaller, i.e. the difference of the radii.