Question

3. Circles with radius of 7 cm and 9 cm touch each other from outside. So find the distance between their centers.
Ans:____________________________​

Answer 1

Answer:

the answer is 3cm

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.

Have great future ahead!

hope it helped!

Answer 2

Radius of first circle, R1=7cm

Radius of second circle, R2 =9cm

∴ By the property of betweeness,

Distance between centres of circles

=R1+r2

=9+7=16

hope it helps you

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