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2 x pi x 2 = 4 x pi
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∙ 12y ago
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How do you find the circumference from the area?
Well, you find the area of a circle by multiplying (pi times radius2) or (pi times radius times radius). The radius is half of the diameter. The formula for the circumference is (pi times diameter). Multiply the radius times 2 to get the diameter. Multiply the diameter times pi.
How do you find the circumference of a circle knowing only the diameter?
Circumference of a circle: pi times diameter
What is pi times one times one?
It is still equal to pi (3.1416) because when you multiply anything by 1 no matter how many times you multiply it, you end up with that other number.
How do you get the circumference when you have the radius?
Multiply 2 times pi (3.14 OR 22/7) times the radius 2(pi)r
How do you find the area of a circle when you have the circumference?
You have to multiply the diameter by pi (3.14) If you have the area, that means you multiplied pi by radius squared. Now you just have to multiply the radius by two, then multiply that number by pi.
How do you find area in a circle?
MULTIPLY THE DIAMETER TIMES PI(3.14) OR MULTIPLY THE RADIUS TIMES 2 TIMES PI(3.14).
Is 3 times pi over two rational?
No; since pi is irrational if you multiply it by a rational number it is still irrational
How do yo figure out the circumference of a circle?
First, you do the radius of a circle times two. Then you multiply that times PI, which is 3.14.
What is 12.8 times pi?
When you multiply 12.8 times pi the exact answer is12.8 Pi, but you can round off the answer to40.192because pi is about equal to 3.14.
What is the circumference of a 12 foot diameter circle?
Circumference= 37.68 feet. All you have to do is multiply the diameter by pi. Same with radius. Multiply the radius by two to get the diameter then do diameter times pi.(pi= 3.14 or 22 over 7.)
How do you find the circumference from the area?
Well, you find the area of a circle by multiplying (pi times radius2) or (pi times radius times radius). The radius is half of the diameter. The formula for the circumference is (pi times diameter). Multiply the radius times 2 to get the diameter. Multiply the diameter times pi.
How do you find the circumference of a circle knowing only the diameter?
Circumference of a circle: pi times diameter
What is pi times one times one?
It is still equal to pi (3.1416) because when you multiply anything by 1 no matter how many times you multiply it, you end up with that other number.
How to find the circumference?
To find the circumference of a circle you multiply the diameter by pi (3.14), the diameter is two times the radius.
How do you find out the circumfrance of a circle?
To find the circumfrance of a circle, you need to multiply 2 times pi, times the circle's radius. If you don't know what that is, you multiply two times pi, and pi equals 3.14, and then multiply that by the radius, which is the measurement of half the circl'e diameter. the diameter is the distance from one side of the circle, to the exact opposite. you measure this with a ruler. HALF the measurement of the diameter is the radius. Example---the diameter of a circle is 20 cm. half the diameter is 10 cm, which is the radius. Multiply 2 times pi[which equals 3.14], times the radius. Good luck!
What is pi times 25?
When you multiply pi times 25, the answer is: 78.53981625
Do you multiply to get perimeter?
No, you add up all the sides. Yes, in terms of a circle. To determine the perimeter or circumference of a circle, you must multiply: 2πr or two times Pi times the radius of the circle.
