Question

A solid ball has a mass of 100 grams and a radius of 2 cm. What is its density​

Answer 1

Given:

m

=

100

g

is the mass of the ball

r

=

2

c

m

is the sphere radius

Density is defined as mass over volume. So let us first determine the volume of this sphere. We use the formula:

V

=

4

3

π

r

3

Now we substitute:

V

=

4

3

π

(

2

c

m

)

3

We get:

V

=

33.51

c

m

3

Now we divide the mass by this volume to get the density:

ρ

=

100

g

33.51

c

m

3

We thus obtain:

ρ

=

2.98

g

/

c

m

3

Answer 2

Answer:

50

Explanation:

density=mass/volume

100/2=50