What is the area of the sector and what is the area of the sector

The sector is an important figure related to the circle, and its area is related to the central angle (apex angle) and the radius of the circle, with the central angle of the circle being n° and the radius of the fan being n 360° r 2. If its apex angle is in radian units, it can be simplified to 1 2 arc length radius. (Arc length = radius radian, at the same time, arc length = central angle (radian system) radius).

The sector also has similarities with the triangle, and the simplified area formula described above can also be seen as: 1 2 arc length radius, which is similar to the triangle area: 1 2 base height.

Formula: s fan = (lr) 2 (l is the arc length of the fan) = 1 2 °r 2 ( is the central angle expressed in radians).

S fan = (n 360) r 2 (n is the degree of the central angle of the circle, r is the radius of the base circle) 360ths n r squared.

Pi is approximately equal to.

Formula: s fan = (lr) 2 (l is the arc length of the fan) = 1 2 °r 2 ( is the central angle expressed in radians).

s fan = (n 360) r 2 (n is the degree of the central angle of the circle, r is the radius of the bottom circle).

Fan area = radius radius pi number of center angles 360

The formula is: s=n 360 r2

The area of the circle is divided by 360 and multiplied by the angle of the fan.

Area of the sector = radian of the angle Arc length Square of the radius.

Arc length = radian radius of the angle.

Minor problems come straight to the quicker.

The formula for calculating the sector area is: s fan = (n 360) r.

S fan = 1 2lr (when the arc length of Zhifan Jiandao), S fan = (1 2) r ( is the central angle expressed in radians), S fan = (lr) 2 (l is the arc length of the fan). r is the radius of the sector, n is the number of angles of the arc to the center of the circle, is the circumference.

Components of the fan:

1. The part between the two points A and B on the circle is called "round beam car and arc", referred to as "arc", which is read as "arc ab" or "arc ab".

2. The angle with the center point of the circle is called the "center angle".

3. There is a kind of statistical chart that is the "fan statistical chart".

Side area of the cone:

1. The side of the cone is along the busbar, which is a fan, the arc length of this fan is equal to the circumference of the bottom surface of the cone, and the radius of the fan is equal to the length of the bus bar of the cone. The side area of the cone is the circumference of the arc length of the bottom surface of the cone, bus 2;It's a surface when there's no oak marking.

2. The cone has a bottom surface, a side, a vertex, a height, and countless busbars, and the bottom view is a circle, and the side view is fan-shaped. <>

The formula for the area of a sector is: area = 1 2) x radian x radius squared, where radian is the degree of the central angle of the sector and radius is the radius of the sector. It should also be noted that if you need to calculate the area of a fan, then you need to convert the angle of the heart angle of Zhongnian Soxiang to radians.

radian = angle of the center angle 180) x for example, if the radius of a sector is 4 and the angle of the heart angle of the middle boy is 60°, then the area is (1 2) x (60 180) x 4 2 = 8

Summary. A fan is a figure enclosed by an arc and two radii passing through both ends of the arc, which is enclosed by a part of the circumference of the circle and its corresponding central corner. The definition of the fan in the Geometry is as follows:

A figure enclosed by two sides of the corner where the vertex is at the center of the circle and a section of the arc that is truncated on both sides.

Sector area family key branch product = square of the radius of the base circle * pi * number of angles at the center of the circle 360 The formula for the area of the sector r is the radius of the sector, n is the number of angles of the arc to the center of the circle, is the pi, you can also divide the area of the circle by 360 and multiply it by the angle of the central angle of the sector ns=n r 2 360s=1 2lr (l is the arc length, r is the radius) s=1 2 r squared.

The fan refers to the figure enclosed by an arc and two radii at both ends of the hail arc, which is surrounded by a part of the circumference and the corresponding central angle of the circle. In the Geometry Originals, a fan shape is defined as a figure enclosed by a circle with vertices on both sides of the corner of the center of the circle and a section of the circle truncated on both sides.

Sector area s(n r) 360

The fan is an important figure related to the circle, its area is related to the central angle (top angle), the radius of the circle, the central angle of the circle is n°, and the fan area of the radius r is: n r 360. If its apex angle is in radian units, it can be simplified to radius multiplied by arc length multiplied by 1 2, arc length = radius radian.

Components of the fan:

1. The part between the two points A and B on the circle is called "arc lead mu", referred to as "arc", which is read as "arc ab" or "arc ab".

2. The angle with the center of the circle as the center of the Huaiyan Sen point is called the "center of the circle".

3. There is a kind of statistical chart that is the "fan statistical chart". "。

1. The formula of arc length: n is the number of angles in the center of the circle, r is the radius, and is the radian of the center angle.

l = n r 180 or l = n 180· r or l = |αr

In a circle with radius r, the arc length of the central angle of n° is l=n° r 180° because the arc length of the central angle of 360° is equal to the circumference of the circle c=2 r.

2. The fan is an important figure related to the circle, and its area is related to the central angle (top angle) and the radius of the circle, the central angle of the circle is n°, and the fan area of the radius r is n 360* r 2. If its apex angle is in radian units, it can be simplified to 1 2 arc length radius.

3. The sector also has similarities with the triangle, and the above simplified area formula can also be regarded as: 1 2 arc length (radius), which is similar to the triangle area: 1 2 base height.

4. Arc length (l) = n 360·2 r = n r 180, the arc of the fan is similar to one side of the triangle.

A sector is a figure in plane geometry that consists of a central corner and two radii determined by a circular arc and two radii. The formula for calculating the area of a sector is: s = dfrac times pi r 2s = 360 r 2 where ss is the area of the fan, theta is the degree of the circle corresponding to the fan, and rr is the radius of the circle where the fan is located.

Specifically, to require the area of a fan, you need to first measure the radius rr of the circle where the sector is located, and the degree theta of the central angle corresponding to the fan, and then substitute these data into the above formula to calculate the area of the fan. It should be noted that when using this formula for calculation, the degree of the angle of the circle wax god should be based on the radian system, rather than the angle wheel system. If you only know other parameters such as the arc length or diameter of the fan, you need to calculate the degree of the central angle through a certain conversion before you can use the above formula to solve the fan area.

Summary. The formula for the area of the sector is: s fan = lr 2, where l is the arc length of the fan, r is the radius, or (r 2)*n 360, where 360 is the degree of the fan.

The formula for the area of the fan is: S fan = lr 2, where L of the blind acacia is the arc length of the fan, R is the diameter of the half-wheel car of Motongyou, or (r 2)*n 360, where 360 is the degree of the fan.

Area formula s fan = lr 2 (l is the arc length of the fan, r is the radius) or (r)*n 360 (i.e. the degree of the fan) The sector is an important figure related to the circle, and its area is related to the central angle (vertex angle) and the radius of the circle, the central angle of the circle is n°, and the area of the sector with radius r is n 360* r. If its apex angle is in radian units, it can be simplified to 1 2 arc length (radius) The sector is also similar to a triangle, and the above simplified excavation area formula can also be seen as: 1 2 arc length (radius), and triangle area:

1 2 Bottom height is similar. Arc length (l) = n 360·2 r = n r 180, the arc of the number of fans resembles one side of a triangle. Potatoes scattered.

Correct formula: s sector = pi ( ) r n 360 score can not be played, I hope the landlord can understand, it is 360 n.

n represents the degree of the fan angle, and s represents the area of the brother.

Hope! Thank you! Envy withered.

Slow typing, defeat or if not I am the 3rd floor.

Very similar to the triangle area formula, the arc length multiplied by the radius divided by 2! It can also be converted into a formula with radians!

The ratio of the area of the circle multiplied by the angle of the sector to the circumference.

Find the area of the circle first, and then multiply it by the ratio of the fan to the total white fraction of the circle (the percentage can be calculated according to the angle ratio)!

One-half arc length multiplied by busbar length.

S fan = 1 2rl = 1 2 * r square * angle = angle 360 degrees * circle area.

1, where r is the radius and a is the angle.

One-half of the arc length multiplied by the half-longitude of the circle where the arc is located, or one-half times the radian of the central angle of the circle multiplied by the square of the half-longitude.

Multiply the radius by the arc length.