Answer:

0.23369 g/cm'3

Explanation:

Density = mass / Volume

Volume of Cylinder = pi * r'2 * L

mass = 277g

Diameter = 14cm, Radius = 7cm

Height/Length = 7.7cm

d = 277g / pi * (7cm)'2 * 7.7cm

density = 0.24469 g/cm'3