Oops. Something went wrong. Please try again. Uh oh, it looks like we ran into an error. You need to refresh. If this problem persists, tell us.

If we say the circumference is 1600 pi, and this is equal to pi times the diameter, we can just divide both sides by pi to get the diameter, which is going to be 1600.

*To find the diameter, measure the circle from its left-right points [divide the circle in half and measure the line you made, make sure the line is straight]. Suppose you get 10in, that is your diameter.

Khan Academy ... Khan Academy

The circumference of a circle is its perimeter. To calculate it, use the formula 2πr, where r is the radius of the circle. The area of the circle can be found by the formula πr^2.

Find the circumference of a circle when given either the radius or diameter. Find the radius or diameter of a circle when given the circumference.

Want a review of circle vocabulary terms (like pi, radius, and diameter)? Check out this article or this video. Want to learn more about finding area of circles? Check out this video.

Labeling parts of a circle Radius, diameter, & circumference Radius and diameter Radius & diameter from circumference Relating circumference and area Circumference of a circle Area of a circle

The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.

The length is given, and the width can be calculated using the formula for circumference of a circle. Once you have both values, just multiply l x w to find the area, then add it to the area of the two …