Question

Could you please help me answer this please and thank you it's about the rectangular prism....

Answer 1

`A_T=8+8+20+20+40+40`

Explanation:

In this case, what we must do is calculate the face area and then add each face, like this:

The area of each area is the product between its length and its width, therefore

`\begin{gathered} A_1=2\cdot4=8 \\ A_2=10\cdot4=40 \\ A_3=10\cdot2=20_{} \\ A_4=10\cdot4=40 \\ A_5=10\cdot2=20_{} \\ A_6=2\cdot4=8 \end{gathered}`

The total area would be the sum of all the areas, if we organize it would be like this:

`A_T=8+8+20+20+40+40`