Answer:
Step-by-step explanation:
Here, you should find the area of the cylinder. Remember the superficial area of a cylinder is
[tex]2\pi rh+2\pi r^2[/tex] ( )
Since we have r= 4 and h=7, we get
[tex]A= 2\pi (4)(7)+2\pi(4)^2=88\pi[/tex]
To find the cost you only need to multiply area A by 0.08. That is
[tex]C= 88\pi \times 0.08[/tex]
