Question

boundary of a circle which radius is 65cm

Answer 1

Answer:

2x14.3x65=1859 cm answer

Answer 2

Answer:

408.2 cm

Step-by-step explanation:

The formula of boundary of a circle is 2πr

here,

r = 65 cm

π = 3.14

boundary is

$2 \times \pi \times r$

$= (2 \times 3.14 \times 65) \: cm$

$= 408.2 \: cm$