Question

You make a cylinder that has a radius of 4 feet and a height of 7 feet out of cardboard. Cardboard costs$0.08 per square foot. how much does it cost you to make?

Answer 1

Answer:

Step-by-step explanation:

Here, you should find the area of the cylinder. Remember the superficial area of a cylinder is

$2\pi rh+2\pi r^2$ ( )

Since we have r= 4 and h=7, we get

$A= 2\pi (4)(7)+2\pi(4)^2=88\pi$

To find the cost you only need to multiply area A by 0.08. That is

$C= 88\pi \times 0.08$