Question

find circumference of circular whose radius 2.1cm​

Answer 1

Step-by-step explanation:

circumference of circle = 2 pi r

=2×22/7×2.1 =44×0.3 = 13.2cm

Answer 2

Answer:

Step-by-step explanation:

radius = 2.1 cm

circumference = 2 x 22/7 x r

                        = 2 x 22/7 x 2.1 cm

                        =2 x 22 x 0.3

                        =44 x 0.3

                        = 13.2 cm