Question

The radius of a circle is 4.2 cm. find the circumference ?

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Answer 1

Answer:

Given, radius r=4.2 cmradius(r)=4.2cm

Circumference of the circle =2πr

                                              =2×  

7

22

​

×4.2

                                              =26.4cm

Area of the circle =2πr  

 

                             =  

7

22

​

×4.2×4.2

                             =55.44cm  

2

Step-by-step explanation:

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Answer 2

Answer:

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Radius of the circle (r)= 4.2 cm

Circumference of a circle (c)= 2 π r

Therefore,

c= 2 × 22/7 × 4.2

c= 26.4 cm

Thus, the circumference of the circle is 26.4 cm.

Step-by-step explanation:

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