SOLUTION: Jordan sews a lace border 50pi inches long around the edge of a circular tablecloth. what is the length of the radius from the inside edge of the lace to the center of the circular

Algebra ->  Circles -> SOLUTION: Jordan sews a lace border 50pi inches long around the edge of a circular tablecloth. what is the length of the radius from the inside edge of the lace to the center of the circular      Log On


   



Question 176191: Jordan sews a lace border 50pi inches long around the edge of a circular tablecloth. what is the length of the radius from the inside edge of the lace to the center of the circular tablecloth?
Answer by EMStelley(208) About Me  (Show Source):
You can put this solution on YOUR website!
So what you are being told in the problem is that the circumference of the table is 50*pi. Remember that the formula for the circumference of a circle is 2*pi*r, or pi*d (diameter). Since we are wanting to solve for the radius, let's just use the first formula. So we have
2%2Api%2Ar=50%2Api
We are solving for r, so divide both sides by 2*pi:
r=%2850%2Api%29%2F%282%2Api%29=25
So the radius is 25 inches.