Question

the diameter of a metallic ball is 4.2 cm what is the mass of the balls if the density of the metal is 8.9 cm cube​

Answer 1

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Given data

• Diameter = 4.2cm
• Density = 8.9cm

To find

• Mass of the Ball = ?

Solution

As we know that

radius = Diameter/2 = 4.2/2 = 2.1cm

Now,

Density = Mass / Volume

Mass = Volume × Density

Volume = 4/3 × pie × r³

= 4/3 × 2.1 × 2.1 × 2.1

Mass= 8.9 × 2/3 × 2.1 × 2.1 × 2.1 × 3.14

Mass = 345.77 gram.

Answer 2

Answer:

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