Question

if diameter of a ring is 18mm .Calculate the circumference of the ring?​

Answer 1

Answer:

The circumference of the ring is

56.57

Step-by-step explanation:

In the process,  

Diameter= 18,  

Radius(r)= 18/2

∴  Radius= 9  

Now,

Circumference (Perimeter) = ?

According to the formula,

Perimeter= 2 × 22/7×r

Taking the equation,

Perimeter= 2×22/7×9

⇒396/7

⇒ 56.57142857

⇒ 56.57

Let's hope this helps you:)

Pls mark me as brainliest