A solid cylinder has a radius of 2 cm and a length of 7 cm. It has a density of 3.1 g/cm 3. What is the mass of the cylinder?

A Solid cylinder is defined as a three-dimensional solid figure which consists of two circular bases connected with two parallel lines.

Answer: Mass of the cylinder having a radius of 2 cm, length of 7 cm and a density of 3.1 g/cm³ is 272.8g

Let's look into the relationship between mass,density and volume 

Explanation:

Given: Radius (r) of the cylinder = 2cm

           Height (h) of the cylinder = 7cm

           Density = 3.1 g/cm³

Mass = density × volume  --------- (1)

Volume of cylinder = π × r² × h

                              = (22/7) × 2² × 7

                              = 22 × 4 

                              = 88 cm³

From (1), Mass = 3.1  × 88

                          = 272.8g

Therefore, mass of the cylinder having a radius of 2 cm, length of 7 cm and a density of 3.1 g/cm³ is 272.8g