1-6 Standard Deviation: $LaTeX: 14.49\pm0.65$ cm³

1-8 Dimensional Analysis 1

1-9 Density Calculations "derived units"

a 64 m³ b 4.7 g/m³
a 3.15 ml b 7.52 g/ml
a 2.83 ml b 4.99 g/ml c these graduated cylinders are not accurate enough for these volumes (too many decimal places, can't be shown properly)
a 239 cm³ b 0.129 g/cm³

1-10 Dimensional Analysis 2 (I did these REALLY fast, so if one seems off, please reach out to me and I will check it)

642.5 fl oz
1.0 x 10³ dag (this one has to be in scientific notation to get the proper number of significant digits)
1.4 ft
1.8 tons
89.3 km
12.34 fl oz
402 cl
1.65 mi
0.72 m²
1.40 dm³
-178 ⁰C
77.0 ⁰F
37.0 ^oC
304 K

- and the tougher problems...

5.0 g/ml; 42 lbs/gal
0.5 km² = 598,000 yd² or 345 yd² = 0.00029 km²; either way you solved it - it's definitely NOT enough area to plant the trees
14 cm³/min