Posted by **makeeda** on Saturday, January 16, 2010 at 11:41am.

a circle has a circumference of 110.6mm

find diameter to the nearest tenth

A.35.2mm

b.36.2mm

c.37.2mm

d.38.2mm

- math -
**Ms. Sue**, Saturday, January 16, 2010 at 11:58am
C = pi * d

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**makeeda**, Saturday, January 16, 2010 at 6:01pm
so it c

- math -
**Ms. Sue**, Saturday, January 16, 2010 at 6:40pm
You already know c which is the circumference.

To find the diameter, use this formula:

d = C / pi

- math -
**makeeda**, Saturday, January 16, 2010 at 7:33pm
what do you mean i dont get it

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**Ms. Sue**, Saturday, January 16, 2010 at 7:37pm
diameter = 110.6 / 3.14

d = ?

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**Ms. Sue**, Saturday, January 16, 2010 at 8:22pm
Right.

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