Surface Area of Cylinders Practice find the surface area of a cylinder with a radius of 4 cm and height of 2 cm use the approximation of 3.14 for pi

1 answer

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

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

where:

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

Given:

  • Radius (\( r \)) = 4 cm
  • Height (\( h \)) = 2 cm

Substituting these values into the formula:

\[ \text{Surface Area} = 2 \times 3.14 \times 4 \times (2 + 4) \] \[ = 2 \times 3.14 \times 4 \times 6 \] \[ = 2 \times 3.14 \times 24 \] \[ = 2 \times 75.36 \] \[ = 150.72 \text{ cm}^2 \]

So, the surface area of the cylinder is approximately 150.72 cm².