number 3 and maybe 4

Algebra
Tutor: None Selected Time limit: 1 Day

Feb 28th, 2015

Answer:

the circumference C of a circle, is given by the subsequent formula:

C = 2*3.14*R, where R is the radius of that circle. Noe, we have:

R = 18/2 = 9cm, since diameter= 2*R,

then:

C = 2*3.14*9= 56.52 cm

Feb 28th, 2015

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Feb 28th, 2015
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