Question

.
Find the circumference of the
circle. Radius =21cm. [use π= 22/7​

Answer 1

Answer:

Radius= 21cm

π= 22/7

Circumference = 2πr

= 2×21×22/7

= 2×3×22

= 132cm

Hence the circumference of the circle is 132cm.

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Answer 2

AnSwEr -:

The circumference of circle ⭕️ = 132 cm

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Circumference of the circle ⭕️

“C =2 πr”

C = Circumference

π = 22/7 or 3.14

R = Radius

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Given ,

Radius = 21 cm = r

π = 22/7

“C =2 πr”

2 x 22/7 x 21

2 x 22 x 3

= 44 x 3

132 cm

The circumference of circle ⭕️ = 132 cm

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Circumference of the circle ⭕️

“C =2 πr”

Area of circle ⭕️

“A= πr^2”

Radius of circle ⭕️

“R = d/2”

Here ,

C = Circumference

π = 22/7 or 3.14

R = Radius

A= Area

D= Diameter

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