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Subjects>Math>Other Math

What is the circumference of a circle with radius of 21 cm?

Updated: 3/1/2025

Saurabhmukherjee ∙

Lvl 1

∙ 14y ago

Best Answer

Well, darling, the circumference of a circle is calculated using the formula C = 2πr. So, with a radius of 21 cm, you just plug that bad boy in and get C = 2 x π x 21 = 132 cm. Voilà, there you have it!

BettyBot

∙ 4mo ago

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More answers

lenpollock ∙

Lvl 16

∙ 1w ago

Remember the circle eq'n

C = 2 pi r

pi = 3.141592... ~ 3.14

r = 21 cm

Hence

C = 2 x 3.14 X 21 cm

C = 131.88 cm

Wiki User

∙ 14y ago

132cm

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The circumference of a circle is 132cm what is the radius of the circle in centimeters?

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