Question

Linda is adding padding to all the surfaces inside her attic for extra warmth in the winter. She needs to find the approximate surface area of the attic, including walls, floors, and ceilings. The attic is in the shape of a triangular prism. Linda draws the net and writes the expression below to represent the surface area of the attic. Are Linda’s net and expression correct? Fill in the blanks: the net Linda drew is "missing some faces". The first term of Linda's expression, 45 (40 + 25 + 25), is __________.

a. Uses the Wrong operations
b. Is missing an addend
c. Is correct
d. Cannot be determined

Answer 1

No, Linda's net and expression are not correct. The net she drew is missing some faces and the first term of her expression is incorrect.

Step-by-step explanation:

No, Linda's net and expression are not correct. The net she drew is missing some faces. A triangular prism has 5 surfaces: 2 triangular bases and 3 rectangular faces. However, Linda's net only shows 2 of the rectangular faces. To find the surface area of the attic, we need to include all the surfaces. The first term of Linda's expression, 45 (40 + 25 + 25), is incorrect because she is not considering all the faces of the triangular prism.