Thursday

October 23, 2014

October 23, 2014

Posted by **robert** on Tuesday, November 13, 2007 at 5:02pm.

I got 25 ft as my answer. I just multiplied the two numbers and I got 25. Is this right?

- math -
**bobpursley**, Tuesday, November 13, 2007 at 5:04pmNope. The distance around the circle is PI*4.

PI*4*12.5= ? way over 25. Way over 100, but not over 200

- math -
**robert**, Tuesday, November 13, 2007 at 5:07pmis it 157.1?

- math -
- math -
**Ms. Sue**, Tuesday, November 13, 2007 at 5:06pmOops. I assume the ball is rolling around the circumference of the circle, not the radius.

To find the circumference of the circle, use this formula, in which C = circumference, r = radius, and pi - 3.14

C = 2r * pi

C = 4 * 3.14

C = ?

Now multiply 12.5 by the circumference.

If you post your answer we'll check it. You can also study about the circumference at this site.

http://www.mathgoodies.com/lessons/vol2/circumference.html

**Answer this Question**

**Related Questions**

physics - A child is twirling a 0.0165-kg ball on a string in a horizontal ...

Physics - A ball rolls down an incline at a constant acceleration of 2 m/s^2. ...

physics - A child is twirling a 0.0100 kg ball on a string in a horizontal ...

Physics - A child twirling a 0.0120kg ball on a string in a horizontal circle ...

Physics - A ball on the end of a string travels in a horizontal circle at a ...

Physics - A child is twirling a 0.0116 kg ball on a string in a horizontal ...

Physics - A child is twirling a 0.0116 kg ball on a string in a horizontal ...

PHYSICS!! - A ball on the end of a string is whirled around in a horizontal ...

Physics - A ball on the end of a string is whirled around in a horizontal ...

Physics - A ball on the end of a string is whirled around in a horizontal ...