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What is 2pir?

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Anonymous

15y ago
Updated: 4/28/2022

The circumference of a circle of radius r. pi is approx 3.14.

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Wiki User

15y ago

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What is the energy stored in the bond of molecules?

There are two forms of energy stored in atoms and molecules, scalar or Potential energy -vh/2pir = -vp and vector energy cP=cmV Momentum energy. The Total stored energy is W = -vh/2pir + cmV = -vh/2pir + cP = [-vh/2pir, cP].


How do you find the diameter of a cable?

Diameter=2piR


What energy is stored in the bond of atoms and molecules?

There are two forms of energy stored in atoms and molecules, scalar or Potential energy -vh/2pir = -vp and vector energy cP=cmV Momentum energy. The Total stored energy is W = -vh/2pir + cmV = -vh/2pir + cP = [-vh/2pir, cP].


How do you get the circumfrence if you have the radius?

C = PI Times Diameter = 2PIr


What is the perimeter of quarter circle?

The arc is one quarter of a circle so is 2pir, the other components of the quarter circle are the two radii, so perimeter is 2r+2pir = 2r(1+pi)


What you meaning of circumference?

The distance around the whole circle. The equation is piD or 2pir


If diameter is 16 what is the circumference?

C=2Pir, since r is 8. the answer would be 16pi.


How do you find the circumference by the radius?

circumference equal 2*pi*r(radius) C=2PiR


How do you calculate the permieter of a circle?

2pir pi = 3.1416 r = radius = 1/2 diameter


If the circumference of a circle is 128 what is the raduis?

Circumference=2Pir so 64 is Pixr and the radius is 64/Pi


The circumference of a circle is 40 pi cm what is the radius of the circle in mm?

C = 2pir (substitute 40pi cm for C) 40pi cm = 2pir (divide by 2pi to both sides) 20 cm = r = 200 mm (since 1 cm = 10 mm)


Why can't you find the exact surface area of a cylinder?

S.A.(Cyl) = 2pir*h This is for the circular (round) face. Then add the area of the two circular ends 2A = 2pir^(2) Hence for the whole cylinder including the circular ends. S.A. = 2pirh + 2pir^(2) Factor S.A. = 2pir(h + r) So you needs to know the radius(r) and cylinder(length)(h). The units will be squared (units^(2)). An example R = 2 cm h = 20 cm Hence SA = 23.142(2 + 20) SA= 23.142(22) SA = 3.14 (88) SA = 276.32 cm^(2).