Question

lead has a density of 11.34 g/cm^3 . mass of a rectangles leads block of 25mm×50mm×100mm size is:

Answer 1

∫=mass/volume ;∫=density

∫=11.34gr/cm^3

v=25mm×50mm×100mm

v=(25×10^-2)×(50×10^-2)×(100×10^-2)cm^3=1250×10^-4cm^3

M=∫v

M=11.34×1250×10^-4

M=14175×10^-4grams

M=1.4175grams