Question

If we know the diameter of a circle is 10 cm, how long
will the circumference be?

Answer 1

Answer:220/7 or 31.4

Explanation:

circumference of circle= 2*pi*radius

radius= half the diameter so its equal to 10/2=5

so C=2*22/7( or 3.14)*5=220/7(or 31.4)

Answer 2

C= π*d

c= π*10

c= 10 π

c= 10 * π

c= 10*3.14= 31.4 cm