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How to find the area of a circle

How to find the area of a circle. By Sierra Lewis. Things to know. R. What is this ??. What is this ??. forbes.com. “r “ means radius which is half of the diameter or half way through the circle. That is pie not like the food “pie’ the number which is 22/7 in fraction form.

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How to find the area of a circle

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  1. How to find the area of a circle By Sierra Lewis

  2. Things to know R What is this ?? What is this ?? forbes.com “r “ means radius which is half of the diameter or half way through the circle That is pie not like the food “pie’ the number which is 22/7 in fraction form.

  3. First you need the formula • The formula is : dreamstime.com

  4. The blue part is the part that we are trying to find the blue part is the area Circle We are NOT trying to find the yellow part

  5. The red line and the purple line together makes the diameter the radius is always half of the diameter. The purple line represents the radius

  6. Things to Know 2 R The radius is always half of the diameter. So if you have a problem and they just give you the diameter your divided it by two. 2 R means to multiply the radius by its self is called squaring it .

  7. Now that you have the basics , now its time to learn how to work a real one.

  8. 1. When you see you problem the first thing you do is find your formula 5cm

  9. 5cm 2. Now that you have the formula you plug your numbers in

  10. the radius is 5 use 3.14 for pi 3.14 5 2 So this is how your problem would look x

  11. Now follow orders of operations!! 3.14 5 2 x First you have to do 5 x 5 = Which is 25

  12. Now follow orders of operations!! 3.14 25 x Next you have to do 3.14x25= Which is 78.5

  13. 78.5cm is your area 2

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