All Common Core: 7th Grade Math Resources
Example Questions
Example Question #6 : Circumference Of A Circle
Find the circumference of a circle with a radius of .
Recall the formula for finding the circumference of a circle:
We can substitute in the value for the radius in order to find the circumference of the circle in question.
Solve.
Simplify.
Example Question #202 : Basic Geometry
Find the circumference of a circle with a radius of .
Recall the formula for finding the circumference of a circle:
We can substitute in the value for the radius in order to find the circumference of the circle in question.
Solve.
Simplify.
Example Question #203 : Basic Geometry
Find the circumference of a circle with a radius of .
Recall the formula for finding the circumference of a circle:
We can substitute in the value for the radius in order to find the circumference of the circle in question.
Solve.
Simplify.
Example Question #211 : Circles
Find the circumference of a circle with a radius of .
Recall the formula for finding the circumference of a circle:
We can substitute in the value for the radius in order to find the circumference of the circle in question.
Solve.
Simplify.
Example Question #141 : Geometry
Find the circumference of a circle with a radius of .
Recall the formula for finding the circumference of a circle:
We can substitute in the value for the radius in order to find the circumference of the circle in question.
Solve.
Simplify.
Example Question #213 : Circles
Find the circumference of a circle with a radius of .
Recall the formula for finding the circumference of a circle:
We can substitute in the value for the radius in order to find the circumference of the circle in question.
Solve.
Simplify.
Example Question #292 : Plane Geometry
Find the circumference of a circle given the radius is 7.
To solve, simply use the formula for the circumference of a circle. Thus,
Another way to similarly solve this problem is to remember that circumference is just pi times the diameter. To find the diameter, remember "di" means two, thus two radii. So, if you multiply the radius by 2, then you have the diameter. Then, just multiply by pi.
Example Question #101 : How To Find Circumference
A circle has a radius of . What is the circumference of the circle?
The formula to find the circumference of a cirlce using the radius is:
The radius is , so we plug that into the formula:
Example Question #293 : Plane Geometry
What is the circumference of a circle with a radius of ?
(Round your answer to the nearest tenth.)
The circumference is given by the formula:
where is the radius.
Example Question #971 : Grade 7
What is the circumference of the circle provided?
In order to solve this problem, we need to recall the formula for the circumference of a circle:
or
The circle in this question provides us with the radius, so we can use the first formula to solve:
Solve: