You may have learned this topic in elementary. In case you have forgot, here is a blog post to refresh your memory! Lets say that there is a circle with a radius of 3 ft. To find the area, you would simply multiply Pi by R^2. So in this case, it would be 3.14 times 9. I got the 9 from the squaring 3. The area of the circle would be 28.26 ft. That wasn't too difficult, right? Now how do you find the circumference of a circle? That isn't difficult either!
You can find out the circumference from using two measurements, the radius or the diameter. The diameter would be easier to use because it takes a fewer steps and it gets you the same answer if you use the radius. The formula for finding the circumference is c=3.14xD. In this case, the diameter would be 6 feet. Plug in the numbers then times by Pi. The formula for the radius is c=2x3.14xR. Plug in the numbers and use the formula.
You can find out the circumference from using two measurements, the radius or the diameter. The diameter would be easier to use because it takes a fewer steps and it gets you the same answer if you use the radius. The formula for finding the circumference is c=3.14xD. In this case, the diameter would be 6 feet. Plug in the numbers then times by Pi. The formula for the radius is c=2x3.14xR. Plug in the numbers and use the formula.
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