Question

find the ratio,circumference and diameter.If the radius is 7cm.​

Answer 1

circumference of a circle==44 cm

Answer 2

Answer:

22 : 7

Step-by-step explanation:

Given -

Radius of circle (r) = 7 cm

To find -

The ratio between circumference and diameter of circle

Solution -

To find the ratio, first we have to find out the circumference and diameter of circle

Circumference = 2πr

$= 2 \times \frac{22}{7} \times 7 cm \\ = 2 \times 22cm \\ = 44cm$

Hence Circumference = 44 cm

Diameter = 2 × radius

= 2×7 cm

= 14 cm

So ratio of circumference and diameter

= 44 cm : 14 cm

= 44 : 14

= 44÷2 : 14÷2

= 22 : 7

Hence Ratio of circumference and diameter = 22 : 7

hope it helps.