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How do you find circumference given the radius?
Remember the eqution and comit to memory C = 2pir or C = pi d Where 'C' is the circumference 'r' is the radius 'd' is the diamter. and 'pi' is the constant of proportion of circles at 3.141592.... usually approximated to 3.14 e.g. If the radius is 5 Then C = 2 * 3.14 * 5 C = 10*3.14 C = 31.4
What is the equation for finding the circumference of a circle from the radius?
circumference equal two times 'pi' times radius. It is written algebraically as C = 2pir Since 2r = d (diameter) Then C = pi*d Also the area (A) of a circle is A = pi*r^(2) 'pi' is the constant of proportion of circles. NB For school work pi = 3.14 or pi = 3.1416 or pi = 22/7
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).
