SOLUTION: The circumference of a circular clock face is 13.12 centimeters more than three times the radius. Find the radius of the face. (Pi = 3.14)

Question 666477: The circumference of a circular clock face is 13.12 centimeters more than three times the radius. Find the radius of the face. (Pi = 3.14)
Answer by unlockmath(1688) (Show Source): You can put this solution on YOUR website!
Hello,
We know that Circumference = pi*2*radius so plug in the values known:
3r+13.12=3.14*2r
Simplify:
3r+13.12=6.28r
Subtract 6.28r and 13.12:
-3.28r=-6.84
Divide by -3.28
Radius= 2.1 cm (rounded off)
Make sense?
RJ
www.math-unlock.com

RELATED QUESTIONS
The radius of a circular mirror is 42 centimeters. Estimate the circumference of the... (answered by checkley71)

Please help!!! The circumference of a circular plate is 94.2 centimeters. Find the radius (answered by stanbon,josmiceli,checkley79)

Find the circumference of a circle whose radius is 5 centimeters Use 3.14 for π... (answered by solver91311)

hotel is in the shape of a cylinder, with a circular foundation. The circumference of... (answered by Fombitz)

The area of a circular region is numerically equal to four times the circumference of the (answered by stanbon)

Find the circumference of a circular swimming ppol with a 6 foot radius (use pie = 3.14) (answered by checkley71)

The radius of a circle is 3 centimeters (cm) more than twice the side of a square. The... (answered by Fombitz)

Find the circumference of the circle whose radius is 9 centimeters. (answered by richwmiller)

If a radius of a certain circle is tripled, with 8.2 centimeters then added, the result... (answered by Theo)