Question

1 of the circles touches the other internally. if their radii are 7cm& 4cm, find thedistance their centres.

Answer 1

Answer:

3 cm

Step-by-step explanation:

Given : Radii of two circles who touch each other internally has radii of 7 cm and 4 cm.

To find : Length of AB.

Solution : This means that, length of

BC = 4 cm and AC = 7 cm.

Now we know that,

AC - BC = AB

Hence, 7 cm - 4 cm = AB

3 cm = AB.

Hence length of distance between centers if two circles is 3 cm.

Answer 2

3 cm because they are touching each other internally if externaly then the answer comes 5.5cm