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Remember the circle eq'n ;-
C = 2 pi r
Hence
When r = 21
C = 2* 3.14 * 21 =
C = 131.88 units.
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Earn +20 ptsQ: What is the circumference of a circle if r equals 21?
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What is the circumference of a r equals 2 cm circle?
Circumference = 2*pi*r = 12.566 cm (approx)
What is the circumference of a circle with a diameter of 58.4 cm?
the circumference of a circle equals 2x(pi)x(r) r=d/2 r=58.4/2=29.2 the answer =2x(pi)x29.2 =58.4(pi)
What is the approximate circumference of circle r?
Circumference of a circle with radius 'r' = 2(PI)(r) ~ 6.28(r)
Is c equals 2πr the same as c equals πr squared?
No. C = 2*pi*r is the equation representing the circumference of a circle. The area of a circle is equal to pi*(r^2).
What does the circumference of a circle?
You mean what Is the circumference of a circle? pi*(r)squared.
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