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In order to find the diameter of a circle if you have the area is to rearrange the formula for the area of a circle to put diameter as the unknown, like so:

PIE*d = Area of a Circle

d = (Area of a Circle) / PIE

Therefore if the area of your circle is 40cm, 40/PIE = 12.73cm and that's the diameter.

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โˆ™ 2011-09-13 01:45:09
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Algebra

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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

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A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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Q: How do you find the diamter of a circle if you know the area?
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Related questions

When you know the radius of a circle how can you find the area?

Area of a circle = pi*radius2


How do you work out the difference of the area of a circle and the area of a square when the radius of the circle is 6cm and the side of length of the square is 12cm?

Do you know how to find the area of a circle when you know the radius ? Good! Do that. Do you know how to find the area of a square when you know the length of the side ? Good! Do that. Now you have two numbers ... the area of the circle and the area of the square. The problem wants you to find the difference of these two numbers. Do you know how to use subtraction to find the difference of two numbers ? Good! Do that.


How do you find the area of a semi-circle if you know the diameter?

A semicircle is 1/2 of a circle. Find the area with the diameter you are given as if you had a whole circle, then divide that answer by 2 to get the area of the semicircle.


What is the radius of a circle if you only know the perimeter?

Divide the perimiter, or circumference, by pi (3.1415), which is the diamter, then divide that by 2 to get the radius


How do you find the radius of the circle if you know the area?

Area of a circle equals pi r2 Therefore the radius of a circle equals the square root of (area divided by pi).


How do you find the diameter of a circle in the terms of pi?

To find the diameter of a circle, you will either need to know the area or its circumference. If you know the area: diameter = 2 x squareroot(area / Pi) If you know the circumference diameter = circumference / Pi


How do you find the radius of a circle if you only know the area?

Radius = +sqrt(Area/pi)


Why it is so important to know the area of a circle?

Knowing the area of a circle which is pi times radius squared will help you to find other properties of the circle


How do you find the area of a circle if you only know its circumference?

Divide its circumference by 2*pi which will give the radius of the circle. Area of the circle then is pi*radius squared


What is the required piece of information tho find the area of a circle?

The only piece of information required to find the area of a circle is the radius of the circle. Once you know the radius of the circle, the area is simply the radius squared multiplied by pi (approximately 3.14).


How do you find the radius if you know the area of a circle?

Radius is the square root of (area divided by pi).


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It depends on the values you have. The base of a cylinder is a circle. If you know the circle's diameter, half it to find the radius. If you know the circle's circumference, divide by 2pi to find the radius. If you know the circle's area, divide by pi and take the square root to find the radius.


How do you find a radius of a cylinder if you only have a volume and area of base?

If you have area of base, then who needs the volume ? The whole problem is nothing but a circle question. The base is a circle. The area of a circle is (pi R2), and you know the area. Do you think you can find 'R' now ?


How do you find the circumference of a circle when you know the area?

If you know the area, you can find the radius --> A = (pi) * r^2 If you have the radius, you can find the circumference --> C = (pi) * 2 * r


How do you find the area of a circle given the radius of a circle?

Find the circumference of a circle with radius 5 ft.Area of a circle. The area of a circle of radius r is given by the polynomial πr2. Use 3.14 as an approximation for π.


What do you multiply to find the area of a circle?

When you know the circle's radius (r): pi X r2 When you know the circle's diameter (d): pi X (d/2)2


How do you find the radius and diameter of the circle if you know the area?

Area of Circle = pi (radius)2 So , using this formula we can find the radius and also the diameter. Diameter = 2(radius)


Formulas of area in a circle?

If you know the circle's Radius, the area is [ pi times r2 ]. If you know the circle's Diameter, the area is [ 1/4 pi D2 ].


How do you find area if you know the diameter?

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How do you find the center and radius of a circle?

just use the area formula ex... area of circle= pi(r square) if you know what your area is then plug it in then do PI / by area that will be your diameter to get the radius / your answer by 2


How do you fund the circumference of circle when you know the area?

You dived the area by the circumference of the circle.


How do you get the diameter of a circle?

That depends on what you know. If you know the radius of the circle, double it to get the diameter. If you know the circumference of the circle, divide it by π to get the diameter. If you know the area of the circle, find its square root and divide the result by π to get the radius then multiply by 2 to get the diameter.


How is Pi related to the area of a circle?

Pi is related to the area of a circle because it just is. It is closely related to it in math, and to find the circumference (PI 3.14), you must know the area or the diameter.


How do you find the area of a circle if the circumference is 10?

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How do you convert area of circle if you know the circumference?

It depends on what you want to convert the area of the circle into.