Question

find the circumference of a circle of radius 21 cm (pie= 3.14)

Answer 1

Answer:

131.88 cm

Step-by-step explanation:

Circumference = 2pi*r where r=radius. Plug the numbers given into this equation to get 2*3.14*21=131.88. Add units. I don't know if you have to round but round if the directions tell you to

Answer 2

21 CM circumference is equal to 2 Pi R
2 into 22 by 7 into 21 CM is equal to 132 CM answer