If the length of an arc is 18.84cm, and the radius of this arc is 4cm, what degree is the central angle of the arc

L = (n μ R) / 180
So the center angle is 270 degrees

The length of an arc is 62.8, and the radius of the circle is 15 cm. What is the angle of the center of the arc?

240° 62.8/2*3.14*15=2/3
2/3*360=240

Given that the arc length is 15 Π cm, and the center angle of the circle it is facing is 60 degrees, what is the radius of the circle where the arc is located

45 cm

The arc with 45 ° center angle is 15 π cm long, so the radius of the arc hidden in the circle is () cm

15 π * (360 / 45) / (2 π) = 60 cm

Arc length of the circle O with radius 1. The arc length corresponding to the center angle of 120 A square iron sheet with a side length of 4cm should be cut out with a round iron sheet. The diameter of the round iron piece should be at least? Cm?

The diameter is the length of diagonal line of square iron sheet with side length of 4cm
Because the distance from the intersection of the diagonal lines of a square to the four vertices of the square is equal, that is, the length of the diagonal line of the square is the diameter of the circumscribed circle of the square
Therefore, the diameter of round iron sheet is greater than or equal to the diameter of circumscribed circle of square
That is to say, the diameter of the selected round iron sheet is at least 4 √ 2cm

The arc length corresponding to the center angle of 120 ° is 6.28 m, and the radius of the circle where the arc is located is () m?

180 × 6.28 △ 3.14 △ 120 = 3M

In a circle with a radius of 2 meters, the arc length corresponding to the center angle of 120 degrees is

It's 2 π × 2 × 120 / 360 = 4 π / 3 meters

An arc with a length of 50cm is known to have an angle of 200 ° to the center of the circle. Find the radius of the circle where the arc is located

Circumference of circle = 50 × 360 / 200 = 90cm
Then the radius = 90 / (2 × 3.14) ≈ 14.33 cm
Here Pai is 3.14

Given that an arc 50 cm long is 200 °, find the radius of the circle where the arc is located (accurate to 1 cm)

A = 200 degrees = 200 * pi / 180 = 3.491 radians
R = arc length / a = 50 / 3.491 = 14.3cm
The radius of the circle where this arc is located is r = 14.3cm

It is known that the center angle of an arc with a length of 50 cm is 200 degrees. Find the radius of the circle where the arc is located (accurate to 1 cm)

According to the arc length formula:
50=200/360*2πR
R=14.33≌14㎝.

If the length of an arc is 18.84cm, and the radius of this arc is 4cm, what degree is the central angle of the arc