Question

Find the circumference of the circle whose diameter is 4.2

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Given,

diameter=4.2

$rdius = \frac{diameter}{2}$

$rdius = \frac{4.2}{2}$

$rdius = 2.1$

circumference of circle=2πr

$= 2 \times \frac{22}{7} \times 2.1$

$= 2 \times \frac{22}{7} \times \frac{21}{10}$

$= 44 \times \frac{3}{10}$

$= \frac{132}{10}$

$= 13.2 \: answer$