Question

Need Help with this math question

Answer 1

Answer:

The answer is 4π cm or 12.6 cm.

Step-by-step explanation:

First, you have to find the radius of circle by dividing diameter by 2 :

$diameter = 4cm$

$radius = 4 \div 2$

$radius = 2cm$

Next you have to use circumference formula, C = 2×π×r where r represents radius of circle :

$c = 2 \times \pi \times r$

Let r = 2cm,

$c = 2 \times \pi \times 2$

$c = 4\pi cm$