Question

A steel cylinder has a base with a radius of 10 cm and height of 8 cm. If the density of the cylinder is 8,000 kg/m3
8
,
000

kg
/
m
3
, find the mass of the cylinder in kilograms. Use π=3.14
𝜋
=
3.14
and round your answer to the nearest tenth.(1 point)

Answer 1

Radius = 10 cm = 0.10 m, height = 8 cm = 0.08 m.
Volume = π r^2 h = 3.14 × (0.10)^2 × 0.08 = 3.14 × 0.01 × 0.08 = 0.002512 m^3.
Mass = density × volume = 8000 × 0.002512 = 20.096 kg ≈ 20.1 kg.

Answer: 20.1 kg.