Tim has to cover 3 tanks completley with paint.

Solution,

diameter of tank=1.4 m

Height of tank=1.9 m

Given tank has top and bottom

Now, The total surface area of cylinder tank is given by:

r( radius of tank)=

h(height of tank)=1.9 m

TSA of 1 tank

=

TSA Of 3 tanks

=

Given a tin of plate covers 5m^2 area.

No.of tins required:

1 tin 5m^2

x tin 34.3 m^2

therefore 7 tins are required.

Hope this helps...

Good luck on your assignment....

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2