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 6 gram per centimetre cube​

Answer 1

Answer:

97 g

Step-by-step explanation:

Diameter of metallic ball =4.2cm

∴ Radius of metallic ball =2.1cm

Volume of metallic ball =  

3

4

​  

πr  

3

=  

3

4

​  

×π(2.1)  

3

=38.81cm  

3

 

Density of metallic ball =  

Volume of metallic ball

Mass of metallic ball

​  

 

⟹ Mass of metallic ball =2.5g/cm  

3

×38.81cm  

3

=97.025g≈97g

I HOPE IT IS HELPFUL :)