Find the surface area of a cylinder with a radius of 5 inches and a height of 10 inches. Use the approximation 3.14 for pi.(1 point) Responses 471 inches 471 inches 345.4 square inches 345.4 square inches 314 square inches 314 square inches 471 square inches

1 answer

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

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

where:

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

For this cylinder:

  • \( r = 5 \) inches
  • \( h = 10 \) inches
  • Use \( \pi \approx 3.14 \)

Now we can calculate each part of the surface area.

  1. Calculate the area of the two bases: \[ 2\pi r^2 = 2(3.14)(5^2) = 2(3.14)(25) = 2(78.5) = 157 \text{ square inches} \]

  2. Calculate the lateral surface area: \[ 2\pi rh = 2(3.14)(5)(10) = 2(3.14)(50) = 2(157) = 314 \text{ square inches} \]

  3. Combine both parts to find the total surface area: \[ \text{Surface Area} = 157 + 314 = 471 \text{ square inches} \]

Thus, the surface area of the cylinder is 471 square inches.