Circumference = 2*pi*radius
In this case radius = 5 units so circumference = 31.4159 units approx.
The formula for calculating the circumference of a circle is 2πr, where r is the radius of the circle and π is 3.1415926535890793 - usually shorted to either 3.1416 or 3.14 So that the circumference of a circle with a radius of 10 units is 62.83 units There are pi radians in a half of a circle. Thus, the measure of a central angle which is a straight line is pi radians. We have a formula that show that the length of an intercepted arc is equal to the product of the angle in radians that intercepts that arc, with the length of the radius of the circle. So we can say that the length of a semicircle is (pi)(r). In a full circle are 2pi radians. So the length of intercepted arc from a central angle with measure 2pi is 2(pi)(r).
Divide the circle's circumference into six 60 degree angles and join the angles to its centre then cut it into 6 equal pieces.
They pass through the centre of the circle and are the circle's diameter
if a girl goes with her friends in a circle?
Remember the circle equation. C = pi d Algebraically rearranging d = C/pi d = 128ft /3.141592.... d = 40.74366... feet. ~ 40.75 feet = 40ft 9 inches.
Circumference of the circle: 2*pi*9 = 18*pi cm
I'm unable to show pictures. But a radius in a circle is a line segment that connects the center of the circle to any point on the circle's circumference. It is half the length of the diameter of the circle.
Circumfernce = 5*pithat is, circumference = pi*d = 5*pi where d is the diameter.Therefore, circumference = 5 millimetres and so radius = d/2 = 2.5 mm.Now that the radius is known, area = pi*r^2 = 19.6 mm^2.
2*pi*radius = circumference 2*pi*radius = 13 Making the radius the subject of the formula is: radius = 13/(2*pi) = 2.06901426 feet Check: 2*pi*2.06901426 = 13 feet
Square the radius and multiply the result by 3.14. You may want additional digits of pi for greater precision, but that's the basic idea.The formula is πr² (that's "pi r squared," if the character doesn't show up properly).ANSWER:The above answer is wrong! The above gives the area of a circle, not the circumference. Besides pie are round, cornbread are square. Pi = 3.1416 as stated above.The circumference of a circle is 2 times the radius times pi .This is because pi for all circles is the circumference divided by the diameter. So, pi times the diameter equals the circumference. The diameter is twice the radius.
radius = circumference divided by 2 x pi so 10.99/6.28 = 1.75 metres
diameter: you have stated that it is 3.14 radius: half the diameter, therefore 1.57 circumference: pi times the diameter, therefore 3.14 x 3.14 = 9.86 area: pi times the radius squared, therefore 3.14 x 2.46 = 7.72
The formula for calculating the circumference of a circle is 2πr, where r is the radius of the circle and π is 3.1415926535890793 - usually shorted to either 3.1416 or 3.14 So that the circumference of a circle with a radius of 10 units is 62.83 units There are pi radians in a half of a circle. Thus, the measure of a central angle which is a straight line is pi radians. We have a formula that show that the length of an intercepted arc is equal to the product of the angle in radians that intercepts that arc, with the length of the radius of the circle. So we can say that the length of a semicircle is (pi)(r). In a full circle are 2pi radians. So the length of intercepted arc from a central angle with measure 2pi is 2(pi)(r).
Area of any circle is: pi*radius*radius or pi*r^2
To determine the roundness of a circle, we typically calculate its circumference divided by its diameter. In this case, for a 30 mm circle, the circumference can be calculated using the formula C = 2πr, where r is the radius (half the diameter). With a radius of 15 mm, the circumference would be C = 2 x π x 15 mm ≈ 94.25 mm. This measurement demonstrates the roundness of the circle based on its size and shape.
-- The circumference of the complete circle is 2 pi R = 12 pi cm.-- The central angle of a complete circle is 360 degrees.-- A central angle of 72 degrees is 72/360 = 0.2 of the circle.-- The perimeter of the 72-degree sector is(0.2 of the whole circumference) plus (the 2 radii at the edges of the sector).-- I'm quite confident that you can handle it from this point. Don't disappoint me.
Assuming you know the location of the center of the circle, to divide a circle into thirds, do the following:mark a point on the circumference and, using a protractor, mark 120 degreesthen repeat for the final markA line from the mark on the circumference to the center will show an angle of 120 degrees.