Question

Two circles of radii $8$ units and $4$ units are drawn. The distances between there centres is $20$ units. Number of common points between the two circles

• A. $1$
• B. $2$
• C. $0$
• D. Infinite

Answer 1

The correct option is C $0$

$r_1=8$ $units$

$r_2=4$ $units$

$r_1+r_2=8+4=12$ $units$ $<20$ $units$.

Therefore, the circles do not touch each other.

Hence, there are no common points between the two circles.

So, option C is correct.