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Use the figure below to answer parts a and b.
Kelsey is making a paperweight as a birthday present for her dad. She cut a piece of wood in the shape of a rectangular prism.
a. Find the surface area of the prism using the formula SA = 2LW + 2WH + 2LH. Be sure you show all your work.
b. Suppose Kelsey wants to decorate the paperweight. What useful information does the surface area provide?
 one year ago
 one year ago
Use the figure below to answer parts a and b. Kelsey is making a paperweight as a birthday present for her dad. She cut a piece of wood in the shape of a rectangular prism. a. Find the surface area of the prism using the formula SA = 2LW + 2WH + 2LH. Be sure you show all your work. b. Suppose Kelsey wants to decorate the paperweight. What useful information does the surface area provide?
 one year ago
 one year ago

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DirectrixBest ResponseYou've already chosen the best response.0
@twilaswift Use the diagram to designate the measures of L, W, and H. Let L = 7 and W = 6 and H = 2 Then, those values will be substituted into the given formula: SA = 2LW + 2WH + 2LH Okay, so far? Yes or No. Feel free to ask questions.
 one year ago

bloodrainBest ResponseYou've already chosen the best response.1
Surface area is the outside area of a prism. The wood is 7*6*2. What you need to do is find the area of all sides and add them together. 7*6=42. There's two sides with that area, so multiply by 2, and you get 84. 7*2=14, and there's two sides with that area, so multiply by 2 again and get 28. Now 6*2=12, times 2 again and it is 24. Now that you found the sides, add them together for the answer. 84+28+24 Don't forget to add the unit (in^2) Thinking logically, the surface area indicates how much of something she can wrap around the paperweight or how much paint she can use, etc.
 one year ago
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