Question

(2) Find the following ratios.
The ratio of circumference of circle with radius r to its area​

Answer 1

Step-by-step explanation:

CSA/Area of circle = 2*pi*r/pi*r square

2/r

therefore ratio=2:r

Answer 2

Answer:

2÷r

Step-by-step explanation:

circumference of circle=2×22×r÷7

area of circle =22×r×r÷7

ratio =( 2×22×r÷7)÷(22×r×r÷7)

=2÷7