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## Homework Statement

Density + Uncertainty of block?

The mass of a rectangular block is measured to be 2.2 kg with an uncertainty of 0.2 kg. The sides are measured to be 60 +/- 3mm, 50 +/- 1 mm, and 40 +/- 2mm. Find the density of the block in kilograms per cubic meter, giving the uncertainty in the result.

## Homework Equations

D=m/V

## The Attempt at a Solution

Mass = 2.2 +/- 0.2kg

Volume = 60mm x 50mm x 40mm = 120000mm

^{3}

then... 1/50 = .02, 3/60 = .05, 2/40 = .05 ---> sum = .12

120000mm

^{3}x .12 = 14400

therefore V = 120000 +/- 14400mm^3 (Please help me convert this to cubic meters)

D=m/V

=2.2/120000 (really not supposed to use this until i get proper conversion)

= ???

Thanks