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A cylinder is labeled with a height of 3 yards and a radius of 2 yards.



Find the surface area of the cylinder. Use the approximation of 3.14 for pi.

(1 point)
Responses

75.36
75.36

62.8
62.8

25.12
25.12

32.97
32.97
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User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
2 hours ago

To find the surface area \( S \) of a cylinder, we use the formula:

\[ S = 2\pi r(h + r) \]

where:

  • \( r \) is the radius,
  • \( h \) is the height,
  • \( \pi \) is approximately 3.14.

Given:

  • Height \( h = 3 \) yards,
  • Radius \( r = 2 \) yards.

Now, substitute the values into the formula:

\[ S = 2 \times 3.14 \times 2(3 + 2) \]

First, calculate \( h + r \):

\[ h + r = 3 + 2 = 5 \]

Now substitute this back into the surface area formula:

\[ S = 2 \times 3.14 \times 2 \times 5 \]

Calculate step-by-step:

  1. Calculate \( 2 \times 2 = 4 \).

  2. Calculate \( 4 \times 5 = 20 \).

  3. Now, multiply by \( 2 \times 3.14 \):

    \[ 2 \times 3.14 = 6.28 \]

  4. Finally, \( S = 6.28 \times 20 = 125.6 \).

So the surface area of the cylinder is \( 125.6 \) square yards.

However, since the provided options do not include that value and are likely related to the calculation of just the lateral surface or other elements, let's verify the choices.

Calculating Lateral Surface Area separately:

The lateral surface area \( L \) is calculated with the formula:

\[ L = 2\pi rh \]

Substituting the values:

\[ L = 2 \times 3.14 \times 2 \times 3 \]

  1. Calculate \( 2 \times 2 = 4 \).

  2. Calculate \( 4 \times 3 = 12 \).

  3. Multiply by \( 2 \times 3.14 = 6.28 \):

    \[ L = 6.28 \times 12 = 75.36 \]

Thus, the total surface area of the cylinder in this context (if the question expects only lateral area) is among the options. Therefore, the answer is:

75.36