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If you draw your triangles using the centre of the circle as one vertex and two more on the circumference, the area of the circle is approximately equal to the sum of the areas of the triangles; the smaller you make the triangles, the more accurate your result will be.
You can divide up a circle into triangles (more precisely, approximate it with triangles), or with rectangles, in several ways. One simple and symmetric way that uses triangles is to trace several radii - if they are close to one another, the resulting circular sections are close to triangles.
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How can you use triangles to find the area of the hexagon?
the edges
How do you find aras of triangles and parallelograms?
Triangles you use : (base x perpendicular height) divided by 2. Parallelogram: you need to find the area of one of the side triangles, then double it (because there's two of them). Then find the area of the square in the middle, and add this to the area of the two triangles.
How do you find the area of a circle if you have the cicumfrence?
Divide the circumference by 2*pi which then will give you the radius and use pi*radius2 to find the area of the circle
How do you find the area of a segment of a circle?
In order to find the area of a sector of a circle you can use the formula below: pi*r^2 * # of degrees/ 360
How can you use a segment in a circle?
if it is the radius you can find area or circumference
How do you find the circumfrence of a circle when you have the area?
Divide the area by pi then square root your answer which will give the radius of the circle and use 2*pi*radius to find the circumference.
How do you find out the area to a right trapezoid?
You use pi ( 3.14)To find the area of a circle you use this calculationpi x r x r.
Area of a circle is 36 square centimeters what is the circumference of the circle?
The area of a circle with radius r is pi*r*r and its circumference is 2*pi*r Use the first to find r and then use that value of r in the second to find the circumference.
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 angle of a triangle within a circle segment?
To find the angle of a triangle within a circle segment, you first need to determine the central angle of the circle segment. Then, you can use the properties of triangles inscribed in circles to find the angle. The angle of the triangle within the circle segment will be half the measure of the central angle.
How do you find the area of a circle from the radius?
Use this formula: A = PI(r)^2
What about pai in mathmatic?
Pi in math is use to find the circumference or area of a circle.
