Question

1. The density of aluminium is 2700 kg/m³.
What is the mass of:
a. 1m³ of aluminium?
b. 10m³ of aluminium?​

Answer 1

Explanation:

Density of aluminium, which is

2700

k

g

.

m

3

, i.e. mass per cubic meter. However, dimensions of block of aluminium is given in cubic centimeter. Hence, we should convert volume in cubic meters.

As

1

c

m

.

=

0.01

m

=

1

100

m

, we have

1

cubic centimeters equal to

1

1000000

cubic meters

and

20

c

m

3

=

20

1000000

m

3

As

Mass

=

Density

×

Volume

mass of a block of aluminium

20

c

m

3

is

20

1000000

×

2700

k

g

=

54

1000

k

g

=

54

grams.