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You cannot get an accurate measure of the area without pi.
If you are interested in an approximation, you could divide the circle up into tiny squares of some fixed area (their size would depend on how big the original circle was). Then count the number of squares where half or more is inside the circle and multiply by the area of each square. That will give you an estimate of the area of the circle.
You could make an approximation with inscribed and circumscribed polygons (which are the sum of a number of isosceles triangles) and average the two areas, increasing the number of sides of the polygons to increase accuracy (that is the way the early Greek mathematicians did it).
Much easier and quicker to use pi!
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How do I figure the area of a circle by diameter?
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
How do you find the area of a circle when the radius is unknown?
By using the other information supplied about the circle to calculate either its radius (from which its area can be calculated) or its area (if the circle is similar to another with a given area and some ratio between the two circle is given):If the diameter is given: radius = diameter ÷ 2If the circumference is given: radius = circumference ÷ 2πIf the circle is similar to another circle which has a given area, and the length ratio is given; square the length ratio to get the area ratio and apply to the given area.
How do you find the area of a half circle?
Make it a whole circle. Find the area. Divide by two.
How do you find the volume of circle?
With great difficulty because a circle does not have volume but it does have an area. Area of a circle = pi*radius2 and measured in square units
What formula is apply to find area of semi circle?
If the radius of the circle is R, then the area of the whole circle is πR2 So the area of the semicircle is 0.5*πR2
How do you find area of circle without pi?
Area of a circle without pi = (circumference/diameter)*radius2
How do you find the area of a circle in square inches?
By using the formula: area of circle = pi*radius2
How do you calculate area of circle without radius?
Well, what you do is you would find the circumference, or the distance around the circle.
Find the area of circle?
Area of circle can be computed using formula is A = πr2 , where, A = represented is Area of circle, π = its constant, call it as pie and value is 22/7 i.e 3.142, r = Radius of circle, which has to be squared or doubled to get area of circle.
Is there an association between the radius of a circle and the area of a circle.. please explain?
The radius of a circle and the area of a circle are directly proportionate. This is because the area of a circle is calculated by the formula: Area = pi * radius2. Since we are using the radius to find the area, there is an association between the two.
Find the area of a sector. Do not round?
Because you will be using the number pi to find the area of the circle, some rounding will be required.
How do you find the circumference of a circle when you know the area?
To find the circumference of a circle when you know the area, you first need to find the radius of the circle using the formula for the area (area = πr^2). Once you have the radius, you can calculate the circumference using the formula for the circumference (circumference = 2πr).
How do I figure the area of a circle by diameter?
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
Do you round your answer when you find the area of a circle?
You would have to round since area will not be able to be represented without rounding.
How do you find the area using the diameter?
I assume that you are referring to the area of a circle. You divide the diameter in half to find the radius and then you put it into the formula.
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)
How do you find the area of a circle inside a square?
all you do is find the area of the circle... if you mean find the squares area, find the area of the circle, and then the square's area and subtract the squares area to the circles area
