Question

8. Kendall is using the formula shown to find the surface area of the prism: Ph + 2D Assuming the base is the shaded surface, use the lines to fill out the correct values for the variables P, h and b in her formula P:____H:____B:____

Answer 1

To find the surface area of a prism is defined by

`P\cdot H+2\cdot B`

In which P is the perimeter of the base, h is the height and b is the area of the base

according to the information

`\begin{gathered} P=1.2+8.8+1.2+8.8 \\ P=20 \end{gathered}`

since H is the height

`H=2`

Since the base is a rectangle the area is calculated like

`\begin{gathered} B=(1.2)\cdot(8.8) \\ B=10.56 \end{gathered}`