Question

The diameter of a metallic ball is 6 cm. Find the mass, if the density of the metal is 4.2g per cm^3

Answer 1

Answer:

Density =mass/volume

Given density =4.2g/cc

Volume of sphere =4/3πr^2

Diameter=6

Radius=3

Volume= 4/3×3.14×3×3×3

=113.04

Mass=density ×volume

4.2×113.04

Mass =474.768g

Hope it helps!!!!

Answer 2

Step-by-step explanation:

if d=6 then r=3

the volume of a sphere is 4÷3 pie cube

therefore it's volume is

4÷3 × 22÷7 ×3 ×3 ×3

4× 22÷7 ×9

88÷7 ×9

792 ÷ 7

the density of ball is 4.2 per cm cube

therefore the mass of ball is

792÷ 7×4.2

792 × 0.6

475.2 cm cube