Question

I cant explain i have to explain in picture form

Answer 1

Let's begin by identifying key information given to us:

Length (l) = 5 cm,

Width (w) = 3 cm,

Height (h) = 4 cm

The surface area of a rectangular prism is given by the formula:

`\begin{gathered} s=2\mleft(wl+hl+hw\mright) \\ s=2(3\cdot5+4\cdot5+4\cdot3) \\ s=2(15+20+12)=2(47) \\ s=94cm^2 \end{gathered}`

Your friend is wrong. He/She made a mistake on line 1 of the solution (the area of one of the sides was repeated twice instead of once)