wha iz the circumferance of a circle wit a diameter of 14???!!!???
344528
The formula is as follows:\n\nC\n- = pi\nd\n\nC=the circumference\nd=the diameter\nand pi=3.14\n\nThe next step is to put all the known information into the equation:\n\nC\n- = 3.14\n14\n\nOnce you have that, you can multiply 14 by both sides to get C alone. Like this:\n\n14( C/14) = (3.14)14\n\n14 is canceled on the side with C, and the you take 3.14 and multiply it by 14 to get 43.96. So now the equation looks like this:\n\nC = 43.96\n\nAnd there you have your answer. The circumference of the circle with a diameter of 14 is 43.96\n\nHope this helped.
256350
a wheel of radius 7 in. can travel 2 circumferences in 2 revolutions.\n\nCircumference is:\nC = 2(pi)(r)\nC = 2(pi)(7 in)\nC = 14pi in.\nTherefore,\n2C = 28pi in. or 87.9646 in.\n\n1.\nC = 2(pi)(r)\nsolve for r(radius)\nr = C/2pi\nSince you know the circumference, simply substitute:\nr = 120cm/2pi\nr = 60/pi cm or 19.0986 cm\n\n2.\nA = aP/2\na = apothem\nP = perimeter\n\nGet the perimeter:\nP = 5(23.8 cm) = 119 cm\nto get the apothem, get a half of the measure of an int. angle of a regular pentagon:\n54degrees\nUsing trigonometry:\ntan 54 = a/(half of side)\na = (11.9tan 54) cm\nThus, area is\nA = aP/2\nA = 11.9tan 54 cm * 119 cm/2\nA = 11.9²*(tan 54)*5 cm² \nA = 708.05 tan 54 cm² or 974.5472 cm²\n\n3.\nUse the formula again, but this time solve for a:\nA = aP/2\n2A = aP\na = 2A/P\nP = 8(20 ft)\nP = 160 ft\na = 2(690ft²)/160ft\na = 69/8 ft\na = 8.625 ft\n\nHope this helps ^_^
889030
circumference = 2 times 3.14 times radius = 6.28 times 0.09m = 0.5652\n\n7 divided by 0.5652 = 12.385\n\nanswer is 12.4
51187
pi is a perimeter around a circle, it's 3.14 because if we wrote the actual number of pi it wouldn't stop
1120961
Simply put, a string can be used to go around the circle. Mark where the first end meets the other then measure on a ruler. Record that. Then u measure the diameter ( the line that parts in two equal parts). Divide the diameter into the circumference and u r supposed to get 3.14 or close to that which is pi. So pi is the ratio of the diameter to circumference. Simply put!!!
217916
the diameter cannot be 9cm when the radius is 12cm because Raduis (r) = Diameter (d)/ 2 = 9/2 = 4.5 .\nRadius is half of diameter
1173297
Well, the circumscribed cylinder will have a radius equal to that of the sphere, and a height equal to the sphere's diameter (which is twice its radius).\n\nS.A. of a sphere = 4*pi*r^2\n\nS.A. of the lateral part of a cylinder = (perimeter of endcap)*(height of cyl.)\n= (2*pi*r)*(diam. of sphere)\n= (2*pi*r)*(2*r)\n= 4*pi*r^2\n\nQ.E.D. :)\n\nHope that helps.
385118
the circumference divided by 2 x PI
1176965
A diameter can be any number.\nNot just any real number... any finite cardinal number.  So you need to give us more information here.
470650
diameter = 9 inches\n\nRadius = 4.5 inches\n\npi * r^2 = 3.14159 * 4.5^2 = 63.61725...
658093
Given the nature of the values I am assuming they are identifying the circumference.    \nC = 2 * pi * radius = pi * diameter.   \nSo, to find the diameter we would divide out the pi or use 3.14 to get to the diameter for each value.  \nHope this helps.
367152
its the distance between the centre point of a circle to any point along the edge.\n\nAlso its half the diameter. and it can be calculated from the circumference by dividing circumference by 2 pi.
858274
of a circle? you multiply 2 * pi * radius = circumference\nor\nmultiply 2 * diameter = circumference
41743
It's "circumference", and it's the boundry of a circular area, and actually, it's not that hard. \n\nThe circumference is the length of the outside boundry of a circle expressed as 2*pi*r ("pi" = the pi constant, sometimes abreviated as 3.14 and "r" is the radius or half of the distance across the circle. You can also do simply ). It's the length you'd get if you were to wrap a string around a balloon and measure it.
622311
Simple ratio where C is the full circumference\n24/360 = 16pi feet/C\n24C = 360*16pi\nC = 15*16pi\nC = 240pi\n\nFrom the circumference you can easily derive the radius:\nC = 2pi r\n240pi = 2pi r\n240 = 2r\nr = 240/2\nr = 120\n\nThe radius is 120 feet
724249
3.14 inch !! Surprised No? Here is te answer, when we  tie apiece of string around the earth so that it touches all the way around means , we are calculating the circumference of the cross section of the earth.\n\nLet R be the radius of the cross section which is a circle, then coircumference will be\n\n2(Pie)R\n\nNow to get the string 1/2 an inch away from the surface, we need to increase the radius by 1/2 an inch, Thus the new circum ference will be\n\n2(pie) x(R+1/2)\n\n= 2(Pie)R + 2(Pie)/2\n\n=2(Pie) R + Pie\n\nDifference in the new circumference and old will be the difference in the length of the string which will be equal to\n\n2(Pie)R + Pie -2(Pie)R = Pie\n\n\nand value of Pie is 22/7 =3.14, Since we have taken inch as our Unit, Answer will be 3.14 inches more string would be required.
316939
Diameter goes from one side of a circle through the center to the other side.  Radius only goes from the center to one side.