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.
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
Area of Circle = pi (radius)2 So , using this formula we can find the radius and also the diameter. Diameter = 2(radius)
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
The surface area of a sphere with diameter 78 and using 3.14 for Pi is about 19,103.76 units2
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.
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
To find the diameter of a circle with a given area, you first need to calculate the radius using the formula for the area of a circle: A = πr^2. Given that the area is 314 cm^2, you can rearrange the formula to solve for the radius, which would be √(A/π). Plugging in the area, you get √(314/π) ≈ 10 cm. Finally, to find the diameter, you double the radius, resulting in a diameter of approximately 20 cm.
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.
Diameter is 8.64444
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
Circumference= 3.14 x Diameter Area of circle= 3.14 x diameter x diameter
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