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a cylindrical can needs to be covered with paper the can is 12 cm tall and has a radius of 6 cm how many square centimeters of paper will be needed to cover the can

Respuesta :

26willisk

Answer:

To calculate the amount of paper needed to cover a cylindrical can, use the formula 2πrh, where r is the radius and h is the height. Substituting the given values, we get 144π square cm. The actual area is approximately 3.14 square cm, resulting in 452.16 square centimeters of paper needed.

Step-by-step explanation:

colemaikell08

Answer: 216π cm^2 or 678.6 cm^2

Step-by-step explanation:

Use the equations for surface area [tex]2\pi r^2 +2\pi rh[/tex], or [tex]2\pi r(r+h)[/tex].

Since the latter is simpler to use, so I will be using that (though you can use either).

Just plug in your numbers, and solve:

2πr(r+h)

2π(6 cm)*( (12 cm)+(6cm) ), which evaluates to 216π cm^2 or 678.6 cm^2

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