Question

if the ratio of the circumeferences of two circles is 3:1 then find the ratio of their areas

Answer 1

square of the 3:1 I.e 9:1. hope it help

Answer 2

Let the radius of the first circle be r1.
Let the radius of second circle be r2.
Circumference of a circle is =
$2 \times \frac{22}{7} \times r$
Therefore r1:r2=3:1
r1=3k
r2=1k
Area of first circle is
$\frac{22}{7} \times 3k \times 3k$

Area of the second circle is
$\frac{22}{7} \times k \times k$
The ratio is 9:1
HOPE IT HELPS. PLEASE BRAINLIEST.