Question

find the circumference of a circle whose radius is 4.2 CM​

Answer 1

Answer:

$\sf{Circumference = 2 \pi r}$

r = 4.2 cm

=> Circumference = 2 × 22/7 × 4.2

=> Circumference = 22 × 1.2 = 26.4 cm

Answer: 26.4 cm

_____________________

Answer 2

Answer:

circumference =2πr

=2*22/7*4.2

=44*0.6

=26.4cm^2