The general equation for the area of a circle is π*r2, where r is the radius of the circle, and π is pi, which is approximately 3.14159. The diameter of a circle is how far it is from one side of the circle to the other, and the radius is how far it is the from edge to the center, thus the radius is half the diameter. Therefore the area is π*(92) ~ 254.47
OK, SO to find the area of a circle, you find the radius (half of the diameter), and fit it into the equation πr2=A where r equals radius and A = area. The perimeter of a circle is π multiplied by the diameter. π is ≈ 3.1415296.
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
Diameter is 8.64444
circumfrence: divide it by π (3.14). Diameter: divide by 2. area: find diameter and divide by 2.
The Lateral Area of a cylinder with diameter of 12 cm and a height of 20 cm is equivalent to 0.075 square meter. Diameter of 12 cm is equals to 0.06 meter in radius and height of 20cm is equals to 0.2 meter
Circumference= 3.14 x Diameter Area of circle= 3.14 x diameter x diameter
Area = 1/4 of (pi) x (diameter)2
Area of a circle = pi*radius2 Radius = diameter/2
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 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
Area = Pi(d/2)2 where d = diameter
A diameter is a line. A single line cannot enclose a space, and thus has no area.
To convert diameter to area , you will need to divide the diameter by two so as to get the radius. The result you get, square it and them multiply it by 3.14 to find the area.
Total surface area including the two end pieces: (2*pi*radius2) + (pi*diameter*height) Area = 240*pi square inches
If you have the circumference: circumference = (pi) * diameter diameter = circumference / (pi) If you have the area: area = (pi) * radius * radius radius = square_root(area / pi) radius = diameter / 2 diameter = 2 * square_root(area / pi)
The area of a circle with a diameter of 6 units is: 28.27 square units.
radius = diameter/2 area of a circle in square units = pi*radius2
Given only the lateral area, you cannot determine the diameter.
Area of Circle = pi (radius)2 So , using this formula we can find the radius and also the diameter. Diameter = 2(radius)
Area = 0.25*pi*d2
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.
You need to give the shape.