what do u do if u have 2 find the circumfrence but u have an radius?

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2007-04-27 11:26:43 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

2 x pi x radius = circumfrence

=)

2007-04-27 11:30:04 · answer #1 · answered by A-Danial 2 · 0⤊ 0⤋

C = 2Ïr and Ï = 22/7 or 3.14
Example
Find the circumference when radius = 28 cm
C = 2 x (22/7) x 28 cm
C = 44 x 4 cm
C = 176 cm
Hope this helps.

2007-04-27 18:42:51 · answer #2 · answered by Como 7 · 0⤊ 0⤋

Circumference = 2 * pi * radius

2007-04-27 18:31:22 · answer #3 · answered by Robert L 7 · 0⤊ 0⤋

diameter d = 2 * r
circumference c = d * pi

2007-04-27 18:30:11 · answer #4 · answered by whatcanmaxdo4u?everythingupscant 3 · 0⤊ 0⤋

C/D = pi.

C = pi D.

C = 2 pi R.

2007-04-27 18:30:14 · answer #5 · answered by Mark 6 · 0⤊ 0⤋