Question

Aluminium has a density of 2900 kg/m². A construction company needs
four cubic metres of aluminium.
Calculate the mass of the aluminium needed.​

Answer 1

Step-by-step explanation:

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

×

Answer 2

Answer:

i dont know the ansss...