Question

4. Find circumference of the circle whose radius is 21cm for class 7​

Answer 1

Answer:

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Q) find the circumference of circle whose radius is 21 cm.

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give:-

circumference of circle is= 2πr

radius= 21.

find the circumference of circle:-

=> 2πr

=> 2×22/7×21

=> 2×22×3

=> 132cm

hence circumference of circle is:- 132cm

Answer 2

Answer:

circumference of circle = ?

radius = 21.

circumference of circle = 2πr

= 2×22/7×21

= 2×22×3

= 132cm

Ans = hence the circumference of circle is 132cm