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The area of the sector is a fraction of the area of the whole disk. So, we need to find the area of the whole disk and then multiply by the ratio of the sector size to the disk. The ratio is 2/3 pi out of a disk that is 2 pi all around (like any circle). Twos cancel, "pi"s cancel, so the sector is 1/3 of the disk. The disk's area is pi times (the radius squared). Pi times four. Well, to avoid using Irrational Numbers, the disk's area is 4 pi. The sector is 1/3 of 4 pi square feet, which is 4/3 pi square feet.
What else can I help you with?
Is the measure of an arc equal to the measure of its central angle?
Yes. Besides the included angle, arc length is also dependant on the radius. Arc length = (Pi/180) x radius x included angle in degrees.
If the diameter of a circular athletic field was 50 yards what was the radius?
Radius is half the diameter, so 25 yards.
What is the radian measure of the central angle of a circle of radius 18 feet that intercepts an arc of length 10 ft?
It is 10/18 = 0.55... radians.
How do you measure the radius?
measure from the middle out to one side
Formula for volume of a circular cylinder?
The volume of a cylinder is represented by this formula:r2Ï€hwhere r = radius of circular baseand h = height of cylinder
What is the measurement of base?
The answer will depend on what measure is required: length of a side, perimeter, radius or diameter (if circular), eccentricity (if an ellipse), area.The answer will depend on what measure is required: length of a side, perimeter, radius or diameter (if circular), eccentricity (if an ellipse), area.The answer will depend on what measure is required: length of a side, perimeter, radius or diameter (if circular), eccentricity (if an ellipse), area.The answer will depend on what measure is required: length of a side, perimeter, radius or diameter (if circular), eccentricity (if an ellipse), area.
What is the radius of England?
Radius is a sensible measure to use with a circular (or spherical) shape. England is neither.
What is the measure of radius is 9 of a central angle?
445
A water faucet has a circular handle with radius 2.5 cm attached to a central shaft with radius 0.50 cm. What is the mechanical advantage of the faucet handle?
I got 1.3
How do you find the degree measure of a central angle in a circle if both the radius and the length of the intercepted arc are known?
-- Circumference of the circle = (pi) x (radius) -- length of the intercepted arc/circumference = degree measure of the central angle/360 degrees
How do you find the radius when the arc length IS GIVEN?
You also need the measure of the central angle because arc length/2pi*r=measure of central angle/360.
What formula can be used to find the orbital speed v for a satellite in a circular orbit of radius r?
The formula to find the orbital speed v for a satellite in a circular orbit of radius r is v (G M / r), where G is the gravitational constant, M is the mass of the central body, and r is the radius of the orbit.
How do you find the volume of a circular prism?
you do the area of the base (circle - pi*radius squared) times the height (measure the tubular face).
How do you solve the questions on Circular Measure?
That depends on the questions which have not been given but in general circular measurements are:- Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius2
What is the raduis of 40.7 in?
40.7 in : presumably inches, is a measure of distance. It has nothing whatsoever to do with a circular shape and so has no equivalent radius - or raduis, even.
What is the relationship between velocity, omega, and radius in circular motion?
In circular motion, velocity is directly proportional to the radius and angular velocity (omega). This means that as the radius or angular velocity increases, the velocity of the object in circular motion also increases.
What is the radius of a cylinder?
The radius of a cylinder is half the thickness of its circular cross section.
