Question 1

internal radii of hollow metal cylinder = 5 cm

external radii of hollow metal cylinder= 6 cm

Length= 2.4 meter

Density= 7.6 g/cm^3

Mass of Cylinder ?

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- Aug 22nd 2012, 07:17 AMhaftakhanMass of Cylinder
**Question 1**

internal radii of hollow metal cylinder = 5 cm

external radii of hollow metal cylinder= 6 cm

Length= 2.4 meter

Density= 7.6 g/cm^3

Mass of Cylinder ?

- Aug 22nd 2012, 07:26 AMhaftakhanRe: Mass of Cylinder
area or mass of a cylinder is pi x radius^2

density= mass x volume

But how to use the two radii. shoule radius used be 6cm+5cm=11cm ? - Aug 22nd 2012, 07:37 AMemakarovRe: Mass of Cylinder
To find the area of the cross section, subtract the area of the smaller circle from that of the larger circle.

- Aug 22nd 2012, 10:38 AMWilmerRe: Mass of Cylinder