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You need to work backwards. the formula for area is r^2pi=A. to find the radius, r, you divide the diameter in half. therefore (d/2)^2pi=Area. plug in your #'s an solve.
Ex. Area=16pi Find diameter.
(d/2)^2pi=16pi divide both sides by pi
(d/2)^2= 16 take the square root of both sides
d/2=4 multiply both sides by 2
d=8
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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 using its diameter?
The area of a circle is pi(radius)2 Radius is half the diameter. Simply divide the diameter in half and enter it into the equation 3.14(diameter/2)2
Find the surface area of a sphere with a diameter of 78 use 3.14 for pi?
The surface area of a sphere with diameter 78 and using 3.14 for Pi is about 19,103.76 units2
How do you find the volume of a cylinder from a given diameter and height?
Easy, you find the area of the circle (Pi X Radius squared) and then multiply it by the height. Your question asks about using the diameter...the radius is half of the diameter.
How do you find the diameter if I have the area?
If the area of a circle is known, the radius can be determined using the area formula: A =π r2, (r = radius, π = to 3.14)A/π = r2,√(A/π) [divide the Area by π, then find the square root of the result ] = r,Then, find the diameter (twice the radius): d = 2r.
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 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 using its diameter?
The area of a circle is pi(radius)2 Radius is half the diameter. Simply divide the diameter in half and enter it into the equation 3.14(diameter/2)2
Find the surface area of a sphere with a diameter of 78 use 3.14 for pi?
The surface area of a sphere with diameter 78 and using 3.14 for Pi is about 19,103.76 units2
How do you find the volume of a cylinder from a given diameter and height?
Easy, you find the area of the circle (Pi X Radius squared) and then multiply it by the height. Your question asks about using the diameter...the radius is half of the diameter.
How do you calculate circumference and area of pi?
Pi is the number of times the diameter of a circle will fit into the circumference. Pi is not a circle, and does not have a circumference or area. To calculate a circumference USING pi, the circumference is diameter * pi. To find the area using pi, area = pi * radius * radius
How do you find the diameter if I have the area?
If the area of a circle is known, the radius can be determined using the area formula: A =π r2, (r = radius, π = to 3.14)A/π = r2,√(A/π) [divide the Area by π, then find the square root of the result ] = r,Then, find the diameter (twice the radius): d = 2r.
How do you find the area of a circle by using its circumference y?
From the circumference y, you can find the diameter by dividing by pi. Knowing the diameter, you can calculate the area by either dividing the diameter by 2, squaring it and multiplying by pi, or by squaring the diameter, dividing by 4 and then multiplying by pi (they are mathematically equivalent). The end result is that you can calculate the area of a circle with circumference y from the formula: Area = π(y/2π)² = y²/4π
How do you find diameter of a circle with the area of 58.69?
Diameter is 8.64444
What is the area of a circle if the diameter is 108 using 3.14 for pi?
The area of a circle if the diameter is 108 using 3.14 for pi is: 9,156.24 square units.
How to find the area of a circle?
Circumference= 3.14 x Diameter Area of circle= 3.14 x diameter x diameter
