When distant between the centres is equal to the sum of the radii.

When distant between the centres is grater than the sum of radii.

When distant between their centres is equal to the difference of the radii.

When distant between the centres is less than sum of radii and greater than their absolute difference.

When distant between their centres is less than the difference of radii

Two circules touch internally. The sum of their areas is 116 pi cm^(2) and the distance between their centres is 6 cm. find the radii of the circles.

Two circles touch internally.The sum of their areas is 170 pi cm and the distance between their centres is 4cm.Find the radii of the circles

Two circles touch externally.The sum of their areas is 130 pi sq.cm. and the distance between their centres is 14cm. Find the radii of the circles.

The distance between the centres of the two circles of radii r_1 and r_2 is d. They will thouch each other internally if