All High School Math Resources
Example Questions
Example Question #11 : 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 #12 : 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 the circumference is .
Plug in our given radius and solve.
Example Question #13 : 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 #11 : 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 we must first know the equation for the circumference of a circle, which is .
We then plug in the given value for the radius, yielding .
We multiply to find the value for the circumference is .
Thus answer is .
Example Question #11 : 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 for the radius into the equation yielding
We multiply to find the value for the circumference is
The answer is .
Example Question #12 : How To Find The Circumference Of A Circle In Pre Algebra
Find the circumference of a circle with a diameter of 4 meters.
meters
meters
meters
meters
meters
meters
The formula for circumference is:
where is the radius of our circle
In this case, we were given the diameter of meters. Thus, we know that the radius is meters (since the diameter is twice the radius). Plugging this into the formula, we have:
meters.
Example Question #13 : 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 the circumference of a circle is .
Plug in our given values and solve.
Example Question #14 : 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, use the equation:
Substitute the given value for the radius into the equation:
Example Question #15 : How To Find The Circumference Of A Circle In Pre Algebra
An ant is standing at the center of a perfectly circular plate. If the ant crawled in a straight line, he would have to crawl 6 inches to reach the edge of the plate. How many inches would he crawl if he crawled a full circle around the edge of the plate?
We need to find the circumference:
In this formula stands for the radius and stands for the diameter.
The distance the ant must crawl to the edge from the center is the radius of the circle.
Plug in 6 inches for :
Example Question #16 : How To Find The Circumference Of A Circle In Pre Algebra
If a circle has a radius of meters, what is its circumference?
The formula for the circumference of a circle is , where is the diameter. This can also be written as , where is the radius of the circle. We were given the radius, so we take the second formula and plug in for .