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Q: What is the volume of a cylinder 45 cm in diameter and 80 cm high?

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For a cylinder with those dimensions, the volume is (pi) x (Radius2) x (Length), and the Radius is 1/2 of the diameter.

Formula for volume of a cylinder is πr^2 * h So the radius of the cylinder is 6-2=3, 3^2= 9*5=45*π So the answer is 45π or 141.372

d = 14.3

height = 45/(pi*1.52) = 6.366197724 units

It will hold just under 661 US gallons. The volume of the tank is (45/2) squared times pi times 96 cu. in. Divide by 231 cu. in. per gallon to get the answer. (I assumed the tank is a right circular cylinder,)

Circumference = diameter x pi, thus circumference/pi=diameter. Now all you have to do is plug in your numbers: 45cm/3.14= approx. 14.33 cm diameter

The volume of a liquid can be calculated by using a measuring cylinder. The volume of a solid can be calculated by displacement, ie. if you have a 100 mL measuring cylinder with 25 mL of liquid in it, then you place the solid inside and the volume goes up to 45 mL, the volume of the solid is 45 - 25 = 20 mL.

The volume V of a cylinder with diameter d and height h = pi X (d/2)2 X h. Substituting the known values into this formula yields pi X 1.52 X h = 45, or h = 45/(pi X 1.52) = 6 feet, to the justified number of significant digits, or if the integers specified are considered exact, 6.366197724 feet.

V = 31,809 cubic inches.

Volume = Area x Depth Area of a circle = Pi * R^2 Pi = 3.1415 Radius = Diameter / 2 Diameter = 27 Radius = 13.5 Depth = 45 Volume = 3.1415 x 13.5^2 x 45 = 3.1415 x 182.25 x 45 = 572.54 x 45 = 25,764 cu. ft.

The radius of a coin with diameter of 45 mm is : 45/2 = 22.5mm The circumference of a coin with diameter of 45 mm is 45*pi = 141,372mm rounded to 3 decimal places

Volume = (1/3)*pi*r2*h where r = d/2 = 5 units and h = 45 units So V = 1178.10 cubic units (to 6 sf)

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