Question

the ratio of the diameters of tow circle is 3:4 find the ratio of their circumferences​

Answer 1

Step-by-step explanation:

ratio of their diameter is 3:4

=3k:4k

therefore their radii are 3k/2,2k

the circumference of 1st circle = 2pie*r

=2pie*3k/2

=3pie*k

the circumference of 2nd circle =2pie*r

=2pie*2k

=4pie*k

the ratio of their circumference =(3pie*k)/(4pie*k)

=3/4

=3:4

therefore the ratio of their circumference is also 3:4