The amount of plastic wrap needed is gotten by finding the area of the triangle, multiplying it by two, and adding it to 72.9 cm²,
Area
Area is the amount of space occupied by a three dimensional object.
To calculate the amount of plastic wrap needed to wrap the triangular prism. We add the area of all the surface of the triangular prism
Amount of plastic = (2 * area of triangle) + (3 * 5) + (3 * 10.3) + (3 * 9)
Amount of plastic = (2 * area of triangle) + 72.9 cm²
The amount of plastic wrap needed is gotten by finding the area of the triangle, multiplying it by two, and adding it to 72.9 cm²,
Find out more on area at: https://brainly.com/question/25689052
