How do you find the radius of a CD with a circumferenece of 37.7cm?

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2007-12-03 10:10:21 · 2 answers · asked by Christy S 1 in Education & Reference ➔ Homework Help

Circumference / Diameter = pi.
Diameter / 2 = Radius

So Diameter = Circumference / pi and half that is your radius.

2007-12-03 10:15:14 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋

C = 2(pi)(radius)
so divided the circumference by (2 pi) and make sure you put parentheses around (2 pi) in the calculator

2007-12-03 18:14:42 · answer #2 · answered by dohboy000 4 · 0⤊ 0⤋