Question

the ratio of the circumference of two circles of radius 5 cm and 7 cm is​

Answer 1

Answer:

Step-by-step explanation:

We know circumstance of circle is given by 2pieR.

So 2pie will be common for both( 2*pie*5/2*pie*7) circle in this way ratio will be 5:7

Answer 2

Answer:

5:7

Step-by-step explanation:

circumference of circle of 5 cm

2 ×22/7 ×5

circumference of circle of 7cm

2×22/7×7

ratio

2×22/7×5 / 2×22/7×7

2×22/7 get cancelled

ratio = 5:7