apply this formula: A = t/360 r2 when t = angle at center and r = radius so A = 471.2 (rounded to 1 decimal place)
You cannot. The angle of the sector MUST be given, although that might be implicitly rather than explicitly.
Use the formula for the area of a circular sector, and solve for the angle.For a circular sector: area = radius squared times angle / 2 (Note: The angle is supposed to be expressed in radians; and in this specific problem, there is no need to convert it to degrees.) Since you know the area and the radius (according to the comments added to this question), you can solve for the angle. Once you know the angle (in radians!), the arc length is simply angle x radius.
The answer depends on what information you do have: radius, arc length, central angle etc.
It is found by: (sector area/entire circle area) times 360 in degrees
The length of an arc is the radius times the angle in radians that the arc subtends length = radius times angle in degrees times pi/180
Find the area of the shaded sector. radius of 3 ...A+ = 7.07
You cannot. The angle of the sector MUST be given, although that might be implicitly rather than explicitly.
arc length = angle/360 x r 60/360 x 30 = 5
The measure of the central angle divided by 360 degrees equals the arc length divided by circumference. So 36 degrees divided by 360 degrees equals 2pi cm/ 2pi*radius. 1/10=1/radius. Radius=10 cm.
The area is r^2*x where r is the radius of the circle and x is the angle measured in radians. If you are still working in degrees then Area = (y/180)*r^2, where the angle is y.
It depends on what information you have: the radius and the area of the sector or the length of the arc.
93
If the sector of a circle has a central angle of 50 and an area of 605 cm2, the radius is: 37.24 cm
As the angle (35 degrees) and the radius (1.1) of the sector are given, you need to find the area of the sector. I think the problem is asking you to do that.The area of a sector is equal to (1/2)(r^2)(θ), where r is the radius and θ is the angle in radians.In order to use this formula we need to convert degrees to radians.360 degrees = 2 pi radians1 degree = (2 pi)/360 = pi/180 radians So,36 degrees = 36(pi/180)= pi/5Thus,(1/2)(r^2)(θ) = (0.5)(1.1)^2(pi/5) ≈ 0.38
Use the formula for the area of a circular sector, and solve for the angle.For a circular sector: area = radius squared times angle / 2 (Note: The angle is supposed to be expressed in radians; and in this specific problem, there is no need to convert it to degrees.) Since you know the area and the radius (according to the comments added to this question), you can solve for the angle. Once you know the angle (in radians!), the arc length is simply angle x radius.
It depends on what else is known about the sector: length of arc, area or some other measure.
(pi * radius squared) * ( sector angle / 360 )