Question

FA2: A metal cylinder has a mass of 100.0 grams. If it measures 4.0 in high and 1.50 in wide, what is its density (ρ) in g/cm3 if 1.0 in=2.54 cm?

Answer 1

$4in=10.16cm$

$1.50in=3.81cm$

$V=\pi r^2h=\pi(\frac{d}{2})^2h=3.14\cdot(\frac{3.81}{2})^2\cdot 10.16\approx 116(cm^3)$

$\rho=m/V=100.0/116=0.862(g/cm^3)$