What is the measurement of the height if the radius of a cylinder is 3 cm?
486266
the formula for volume of a cylinder is V = h * pi * r^2.\nAlternatively, the surface area is A = h * pi * r * 2.\n\nSo, if you have either the surface area or the volume, you can calculate for the height.\n\nH = Volume / pi * r^2\nH = Area / pi * r * 2
549879
haha I was just working on my geometry homework and we're doing that right now.. the formula for the volume of a prism is: V=Bh, where B=the area of the base and h=the height of the prism.. that's the equation for ALL prisms..\n\nthe equation for the volume of a cylinder is V=pi(r^2)h\nso it's pi times the radius squared times the height\n\nthe equation for the circumference of a circle is C=2(pi)r\nso 2 times pi times the radius
624334
Example: Find the length of a helix which winds three times around a cylinder of height 12" and radius 3"\n\nAnswer: divide the cylinder into three sections. The helix goes once around a cylinder of height 4" and radius 3"\n\nThe surface of the cylinder can be "peeled" into a rectangle 4" by 2 * pi * 3" = 18.850". The helix is a diagonal of that rectangle. So its length is sqt(4^2 + 18.850^2) = 19.27"\n\nIt goes around the cylinder three times and its total length is therefore 57.81"
74729
The formula for the area of a circle is:\nPi*r^2/2\nto translate, "one half of Pi times the suare of the radius"\n\nSo, if you have a 3 cm radius:\n(3 cm)(3 cm) = 9 cm^2\n\nthen divide by two:\n9 cm^2 /2 = 4.5 cm^2\n\nthen multiply by Pi:\n\n4.5(Pi) cm^2\n\nIf you want a decimal number, you can use an estimation of Pi, something like 3.1415, but it's not exact since Pi is an irrational number (a non-ending and non-repeating decimal)
237156
Pi * r^2\n\n(Pi R Squared)\n\nwhere R is the radius (which is also equivalent to half the diameter)
478313
V = h*pi*r^2\n\nThere h - height\nr - radius of foundation\nV - volume
1141669
Capacity is volume.  The inside of a mug is cylinderical. The equation for the volume of a cylinder is:\n\nV = pi * (radius)^2 * height\n\nso,\nradius = diameter/2\nr = 8/2\nr = 4\n\nV = (3.14) (4)^2 (7)\nV = (3.14) (16) (7) \nV = 351.68 cubic centimeters (cm^3)
411743
The volume of a cone is 1/3 the area of the base of the cone (the circle) times the height.  The area of a circle is pi times the radius squared.\n\nSo, 1/3 (pi)(33.5)(33.5)(1797) = approx. 2,111,865.76 cubic centimeters.
447026
this is 250 liters, that is 250 cubic meters.\n\nVolume of the cylinder is (area of the base)*height.\nAs the base is a circle, its area is (squared radius)*Pi.\n\nIf you assume Pi almost equal to 22/7, you can take its inverse, 7/22, and multiply by 10: you get 70/22. Take this value in meters as the height and 5 meters as the radius of the base.
96858
erm the volume of the circle would be the same, the volume of the cylinder would be (pi)r*r*h (r=radius, h=height)
862969
pi*(radius)^2*height\n\npi is aprox. 3.14 or 22/7
141519
It is the length divided by the radius
358957
Volume = pi * r^2 * h\n\nr is 1/2 the radius of the drilled hole = (D'/2)\nh is equivalent to the diameter of the original cylinder = D
598391
First find the area of the circle that is on the top or bottom of the cylinder. The area formula for a circle is \n\n"pi,r squared. That means multiply pi times the radius of the circle which you have to square first.\nThen you take the number that you get and multiply it by the height of the cylinder.\nGood luck.
306980
Yes cc stands for cubic centimeters, and is a measure of the cylinders displacement. You can calculate the displacement if you measure the bore of the cylinder and the stroke (how far the piston move up and down).\ndisplacement = [pi x ( 1/2 bore)squared x stroke] times the number of cylinders. The bore and stroke measurement need to be in centimeters. If you measured it in inches your answer would be in cubic inches, like we used to measure American car engine and Harley's.
521096
The volume of a tube or cylinder is the cross-sectional area times the height/length.  Therfore, A=pi*(d/2)^2...\n\nA = pi * (3/8in)^2 = 9*pi/64in^2\n\nSo...\n\nV = A * length\nV = 9*pi/64in^2 * 800ft*(12in/1ft)\nV = 9*pi/64in^2 * 9600in\nV = 4241.15in^3\n\nHope that helps :)
1165863
Find the area of the base (the round part), then multiply by the length.  They gave you the circumference as 3.5 inches, so divide this by 2*pi to get the radius.\n\npi * (3.5/2pi) * (3.5/2pi) * 14\n(3.5 * 3.5 * 14)/(4 * pi)\n13.64753637013 or approximately 13.648 cubic inches