Q: What three items are part of the formula for circumference and area of a circle?

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No. The formula for circumference of a circle is pi x diameter. As pi is 3.14... then the circumference will be at least 3.14 times the diameter.

That's the formula for the circumference of a circle, when you know the radius. What you do is multiply all three together. Pi is approximately 3.14, and r stands for the radius. The result of the multiplication is the circumference.

Circumference of circle: 124*pi = 389.557 feet to three decimal places

A circle with a diameter of three feet has a circumference of 9.4 feet.

Circumference of the circle: pi*1.675 = 5.262 inches to three decimal places

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No. The formula for circumference of a circle is pi x diameter. As pi is 3.14... then the circumference will be at least 3.14 times the diameter.

That's the formula for the circumference of a circle, when you know the radius. What you do is multiply all three together. Pi is approximately 3.14, and r stands for the radius. The result of the multiplication is the circumference.

Remember that the formula for the circumference of a circle is 2πr, with r being the radius. So 2πr is 33. we can divide this number by pi to get the diameter. According to a calculator, 33 / π = 10.50423. Now the formula for the area of a circle is πr2. So we need to divide 10.50423 by 2. The result is 5.25211. This is r. π(5.25211)2 = 86.65987. So the area of a circle with a circumference of thirty three units is 86.65987 units.

circumference of a circle = diameter*pi or 2*pi*radius

Circumference of circle: 124*pi = 389.557 feet to three decimal places

A circle with a diameter of three feet has a circumference of 9.4 feet.

Circumference of the circle: pi*1.675 = 5.262 inches to three decimal places

Circumference of circle: 2*pi*6 = 37.699 units to three decimal places

Circumference of the circle: 2*pi*6 = 37.699 cm to three decimal places

Construct a circle with a 4.5 radius. The circle's circumference is 360 degrees. So mark out 3 by 120 degrees on the circumference and join them to the centre of the circle which will divide the circle into three equal parts.

three times

Its circumference Its diameter Its radius