Answer: Explained.
Step-by-step explanation: We are given to explain the importance of using net in finding the surface area of prisms and pyramids.
With the help of net, we can easily see the different sides, faces and angles of a prism or pyramid.
For example, see the attached figure, where the nets of both prism and pyramid are shown.
With the help of these figures, we can easily calculate the surface area by finding the surface area of each face of the prism or pyramid.