Question

find the circumference of a circle whose diameter is 84cm and 91 cm and 42 cm and 21 cm and 56​

Answer 1

Answer:

FOR 84CM CIRCUMFERENCE IS 264cm

for 91 it is 286cm

for 42 it is 132

for 21 it is 66

for 56 it is 176

Step-by-step explanation:

given D = 84cm

R=D/2

 =84/2

 =42cm

C=2πr

  =2*22/7*42

  =264cm

when D is 91

r=91/2

C=2πr

= 2*22/7*91/2

=286cm

when D is 42

r=42/2=21

C=2πr

=2*22/7*21

=132cm

when D is 21

r= 21/2

C=2πr

=2*22/7*21/2

=66cm

when D is 56

r= 56/2=28

C=2πr

=2*22/7*28

=176cm