This question has already been answered in detail and the answer is 38.83251825 or 39 inches to the nearest foot.
The ratio of a circle's circumference to its diameter is a constant but irrational (meaning its precise value cannot be fully written out using traditional numbers) number called Pi (π). Pi ~= 3.1415927 Circumference = Pi (3.1415927...) * Diameter (120 inches) ~= 376.991118 inches ~= 377 inches
Estimate: 3*40 = 120 inches Actual: pi*39 = 122.5 inches to one decimal place
Circumference will be 120 pi inches, ie 31 feet and very nearly 5 inches
360 degrees in a circle 120 degrees = 12mm 360 degrees = 36mm Therefore the circumference of the circle is 36mm.
A central angle of 120 is one third of the circle, so the arc length of 28.61 is one third of the circumference. 28.61 X 3 = 85.83
Diameter of the circle: 120/pi = 38.197 inches rounded
First we have to find the radius: pi*radius2 = 120 sq ins Divide both sides by pi and then square root both sides: radius = 6.180387232 inches circumference = 2*pi*radius circumference = 38.83251825 or 39 inches to the nearest inch.
The ratio of a circle's circumference to its diameter is a constant but irrational (meaning its precise value cannot be fully written out using traditional numbers) number called Pi (π). Pi ~= 3.1415927 Circumference = Pi (3.1415927...) * Diameter (120 inches) ~= 376.991118 inches ~= 377 inches
radius = 120/(2*pi) = 19.09859317 cm area = pi*19.098593172 = 1145.91559 or about 1146 square cm
Estimate: 3*40 = 120 inches Actual: pi*39 = 122.5 inches to one decimal place
Circumference will be 120 pi inches, ie 31 feet and very nearly 5 inches
A = pi r2r2 = A/pir2(1/2) = (A/pi)1/2r = (120/pi)1/2r ≈ 6 inC = 2 pi rC = (2)(pi)(6 in)C ≈ 37.7 in
360 degrees in a circle 120 degrees = 12mm 360 degrees = 36mm Therefore the circumference of the circle is 36mm.
A central angle of 120 is one third of the circle, so the arc length of 28.61 is one third of the circumference. 28.61 X 3 = 85.83
Circumference equals pi multiplied by diameter. Therefore 120 (circumference) divided by pi equals diameter. Pi is on your calculator.
Divide the circumference by the value of Pi and divide the result by 2 - that will give you your answer.
1145.9