Question

Find the circumference of a circle whose diameter is :1) 14 cm 2) 10.5m

Answer 1

circumference=pie*2*r=pie*dia
1)22/7*14=44cm
2)22/7*10.5=33cm

Answer 2

Hey dear friend

(i)Radius of 1st circle=14/2=7cm
Circumference of a circle=2πr
Circumference of a circle=2*22/7*7
Circumference of a circle=44cm

(ii)Radius of a 2nd circle=10.5/2=5.25cm
Circumference of a circle=2πr
Circumference of a circle=2*22/7*5.25
Circumference of a circle=33cm

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