Question

Find the circumference of a 18mm. radius 3.14=pi

Answer 1

113.04 mm

Explanation:

circumference of a circle = 2πr

where

r = 18mm

π = 3.14

plugin values into the formula:

C = 2 (3.14) 18

C = 113.04 mm

Answer 2

The answer is 56.57

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

×

r

⇒

2

×

22

7

×

9

⇒

396

7

⇒

56.57142857

⇒

56.57

Hope this helps you:)