Question

What is the surfacearea, in square feet, ofthe cylinder? Round tothe nearest tenth. Use3.14 for pi.

Answer 1

#2

The formula for the surface area of a cylinder is:

`A=2\pi r^2+2\pi rh`

Where:

r is the radius of the cylinder

h is the height of the cylinder

Using this formula and the data given,

`\begin{gathered} A=2(3.14)(6^2)+2(3.14)(6)(15) \\ \rightarrow A=791.3 \end{gathered}`

Answer: Option 4

#3

For this pyramid we have 5 faces:

• Four triangles of base 8" and height 14"

,

• A square of side 8"

Therefore, the surface are would be:

`\begin{gathered} A=(8*8)+4*((8*14)/(2)) \\ \rightarrow A=288 \end{gathered}`

Answer: Option 2