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d * pi
or 2 * r * pi
Where d is diameter and r is radius and pi = 3.14159
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∙ 11y ago
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What is the formula for finding the radius of a circle when you have the circumference?
Divide the circumference by 2*pi because 2*pi*radius = circumference
What is a formula for calculating the radius of a circle when the circumference is known?
The way to find the circumference is either 2 x pi x r, or pi x d.So rearrange the formula:circumference = 2 x pi x rcircumference / 2 x pi = rSo take the circumference, and divide it by 2 pi and you have the radius.A:Using the formula for circumference which is 2(pi)r solve for r. Now you have radius = circumference/(2pi). The formula for area of a circle is (pi)r^2. Substituting r with circumference/(2pi) you get area = pi(circumference/(2pi))^2. When you simplify you get area = circumference^2/(4pi).
What is formula to figure the circumference of a circle?
Circumference = 2 x {pi} x radius = {pi} x diameter
Formula for circumference of a circle?
Circumference of a circle:Formula= diameter * pi (approx 3.14)
What is the formual for pi?
the formula for pi is the ratio of the circumference of a circle to the diameter of the circle
What is the area and circumference of a diameter of 9.3?
The formula for circumference is c = pi*diameter and the formula for area is a = pi*r^2 Therefore, the circumference is 9.3*pi and the area is pi*(4.65)^2 *4.65 since the radius is half the diameter* *You could substitute pi with 3.14, though leaving your answers in terms of pi is better*
What is the circumference of the circle in terms of pi?
pi = circumference/diameter circumference = pi*diameter or 2*pi*radius
Why the formula of circumference of circle always constant?
Because:- circumference/diameter = pi and when the formula is rearranged circumference = pi*diameter
What is the formula for the circumference of a circle in pi?
Circumference of a circle = 2*pi*radius or pi*diameter
How do you express the area of a circle as a function of its circumference?
By using the well-known formula, A = pi x r2, and expressing the radius in terms of the circumference, r = c / (2 x pi). Replace in the first formula, and simplify. f
What is the circumference of a circle with a radius of 56 inches in terms of pi?
The formula for the circumference of a circle is C = pi r2 where r is the radius. Substituting 56 inches for the radius gives: C = pi(56)2 = (3136)pi inches.
What is the formula for area and circumference of a circle?
The formula for the area of a circle is pi * radius squared. The circumference of a circle's formula is pi * diameter. NOTE: pi equals approx. 3.14
What is the diameter of a 7 circumference?
When you are given the circumference of a circle asked to find the diameter, divide the circumference by pi. The formula for circumference is pi x diameter, so the formula for diameter is circumference divided by pi. So 7 divided by pi equals about 2.22.
What is the circumference of a circle with a diameter of 5m in terms of pi?
circumference in m= 5*pi
What is the circumference of a 100 foot radius in terms of pi?
circumference = 2*pi*100
What is the formula for the circumference of the cirle?
circumference of a circle = 2*pi*radius or pi*diameter
What is the circumference and area of a circle with a diameter of 17 mm?
Circumference in terms of PI = 17 PI Circumference with 3.14 = 53.58 Area in terms of PI is 72.25 Area with 3.14 is 226.86500
