Question

Given that the diameter of Circle A is 7 cm, and the radius of Circle B is 21 cm, what can be concluded about the two circles?

A.
the circles are similar and congruent
B.
the circles are neither similar nor congruent
C.
the circles are similar
D.
the circles are congruent only

Answer 1

C. the circles are similar

Given radius:

Circle A = 7 cm

Circle B = 21 cm

1) Similar Shape : they can be enlarged and diminished where size varies.

2) Congruent Shape : they must have similar size and lengths.

Hence, here the circles are similar with different lengths.