Question

Work out the circumference 4 cm radius Take pi to be 3.142 and give your answer to 1 decimal place

Answer 1

Answer is :

• 25.1 cm

Explanation:

Circumference of circle = 2πr

Radius = 4 cm

π = 31.42

Plugging the values,

= 2 × 3.142 × 4

= 6.284 × 4

= 25.136

= 25.1 cm

Answer 2

C = 25.1 cm

Explanation:

The circumference is C = 2πr

(C = circumference, π = pi and r = radius).

Stick in the values accordingly.

C = 2 × 3.142 × 4

= 6.284 × 4

= 25.136

= 25.1

According to my calculations, the circumference = 25.1 cm