We want to wrap this cylinder in gift wrapping paper. What is the total surface area rounded to the nearest hundereth? The height is 2 and the radius is 3

1 answer

To find the total surface area of a cylinder, you can use the formula:

\[ \text{Surface Area} = 2\pi r^2 + 2\pi rh \]

Where:

  • \( r \) is the radius of the base of the cylinder,
  • \( h \) is the height of the cylinder.

Given:

  • Height \( h = 2 \)
  • Radius \( r = 3 \)

Now, plug in the values:

  1. Calculate the area of the two circular bases: \[ 2\pi r^2 = 2\pi (3^2) = 2\pi (9) = 18\pi \]

  2. Calculate the lateral surface area: \[ 2\pi rh = 2\pi (3)(2) = 12\pi \]

  3. Add both areas to find the total surface area: \[ \text{Total Surface Area} = 18\pi + 12\pi = 30\pi \]

Now calculate \( 30\pi \) using \( \pi \approx 3.14 \):

\[ 30\pi \approx 30 \times 3.14 = 942 \]

Thus, the total surface area rounded to the nearest hundredth is approximately

\[ \boxed{94.20} \]