Question

If the ratio of radii of two circles is 1:4, then ratio of their circumference is

Answer 1

Answer:

1:4

Step-by-step explanation:

Let the Circumferences of the circle be C₁ , C₂

then,

$\frac{C_1 }{C_2} = \frac{2\pi r_1}{2\pi r_2} \\ = \frac{r_1 }{r_2 } \\ = \frac{1}{4} \\ = 1 : 4$