All High School Math Resources
Example Questions
Example Question #1 : How To Find The Circumference Of A Circle In Pre Algebra
Find the circumference of a circle with a radius of 6 inches.
Use the circumference formula and plug in 6 for . Leave in your answer to get .
Example Question #2 : How To Find The Circumference Of A Circle In Pre Algebra
What is the circumference of a circle with a radius of ?
To find the circumference of a circle given the radius we must first know the equation for the circumference of a circle which is
We then plug in the number for the radius into the equation yielding
We multiply to find the value for the circumference is .
The answer is .
Example Question #3 : How To Find The Circumference Of A Circle In Pre Algebra
What is the circumference of a circle with a radius of ?
To find the circumference of a circle given the radius we must first know the equation for the circumference of a circle which is
We then plug in the number for the radius into the equation yielding
We multiply to find the value for the circumference is .
The answer is .
Example Question #2 : How To Find The Circumference Of A Circle In Pre Algebra
What is the circumference of a circle with radius ?
Remember, the formula for circumference of a circle is .
Plug in our given values:
Example Question #3 : How To Find The Circumference Of A Circle In Pre Algebra
If the circumference of a circle is , what is the radius of the circle?
The formula for the circumference of a circle is .
The problem gives us the circumference, so plug that in:
Notice that the 's cancel out:
Divide both sides by :
Example Question #4 : How To Find The Circumference Of A Circle In Pre Algebra
If the circumference of a circle is , what is the diameter of the circle?
The diameter of the circle is twice the radius, or . We first need to find the radius using the information that has been given to us.
The formula for the circumference of a circle is .
The problem gives us the circumference, so plug that in:
Notice that the 's cancel out:
Divide both sides by :
Plug that into our first equation:
Example Question #7 : How To Find The Circumference Of A Circle In Pre Algebra
If the diameter of a circle is , what is the circumference?
The formula for circumference is . The problem gives us the diameter instead of the radius, so we need to convert.
The diameter is twice the radius or .
This means that, for this circle, .
Divide both sides by :
Plug this value into our initial equation to solve:
Example Question #2 : How To Find The Circumference Of A Circle In Pre Algebra
What is the circumference of a circle with a radius of ?
The formula for circumference of a circle is .
Plug in our given information and solve.
Example Question #9 : How To Find The Circumference Of A Circle In Pre Algebra
What is the circumference of a circle with a radius of ?
The formula for circumference of a circle is .
Plug in our given values.
Example Question #10 : How To Find The Circumference Of A Circle In Pre Algebra
What is the circumference of a circle with radius of ?
The formula for circumference of a circle is .
Plug in our given values.