Question

I reallly need help I don’t get It _ 1-4

Answer 1

We have the following formula for the surface area of a regular pyramid:

`S=A+(1)/(2)Ps`

where A is the area of the base, P is the perimeter of the base and s is the slant height.

In this case, we have a squared base, then, we have the following:

`\begin{gathered} A=7\cdot7=49 \\ P=7\cdot4=28 \\ s=12 \end{gathered}`

then, using the formula above, we get:

therefore, the surface area is 217cm^2