Find the cross-sectional area of the cylinder (pi x the radius2), the multiply that by the height of the cylinder
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You need to know the length and radius (1/2 the diameter) of the cylinder. From there, use this formula: V = radius2x Pi x length
The volume of a cylinder is given by the equation V=2*pi*r*h V=volume r=radius h=height Since the height and volume are given in this case, rearranging the equation will show that r= V / (2*pi*h). With that equation you can find the radius of any cylinder with known volume and height.
That depends on what you already know about it. Formulas are just relationships between what you do know and what you don't know. I can't tell you what formula to use until you tell me what you know. Example: If you know the volume of the cylinder and its radius, then Height = Volume / pi xradius2 If you know the area of the cylinder and its radius, then Height = Area / 2 x pi x Radius If you know the volume and area of the cylinder, then Height = Area2 / 4 x pi x Volume
Use the formula for cylinder volume: V = radius2 x Pi x length39.25 inches2 x 3.142 x 78.5 = about 379,975.12 cubic inches