Find the surface area of a cylinder with a height of 4 yards and a

radius of 2 yards. Use 3.14 for and round to the nearest tenth.
(1 point)

1 answer

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

\[ \text{Surface Area} = 2\pi r(h + r) \]

where \( r \) is the radius and \( h \) is the height.

Given:

  • Radius \( r = 2 \) yards
  • Height \( h = 4 \) yards
  • Using \( \pi \approx 3.14 \)

Now, plug in the values into the formula:

\[ \text{Surface Area} = 2 \times 3.14 \times 2 \times (4 + 2) \]

Calculating step-by-step:

  1. Calculate \( 4 + 2 \): \[ 4 + 2 = 6 \]

  2. Multiply \( r \) by \( h + r \): \[ 2 \times 6 = 12 \]

  3. Now calculate \( 2 \times 3.14 \times 12 \): \[ 2 \times 3.14 = 6.28 \] \[ 6.28 \times 12 = 75.36 \]

Thus, the surface area of the cylinder is approximately \( 75.36 \) square yards.

Rounding to the nearest tenth gives:

\[ \text{Surface Area} \approx 75.4 \text{ square yards} \]

Therefore, the final answer is 75.4 square yards.