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OpenStudy (joclyn16):
What is the surface area of a rectangular prism if it has a width of 31, length of 46, and height of 7?
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OpenStudy (mathstudent55):
|dw:1454877134740:dw|
OpenStudy (danjs):
the sum of the sides area
OpenStudy (mathstudent55):
A rectangular prism has 6 rectangular faces. The total surface area is the sum of the areas of the 6 rectangular faces.
OpenStudy (mathstudent55):
@Joclyn16 What is the area of a rectangle?
OpenStudy (joclyn16):
Length times width
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OpenStudy (mathstudent55):
|dw:1454877368135:dw|
OpenStudy (mathstudent55):
Correct. The rectangular prism has 6 faces. You need to find the areas of the 6 faces and add them. All the faces are rectangles.
OpenStudy (mathstudent55):
You don't need to do 6 different multiplications because there are only 3 different rectangles.
OpenStudy (mathstudent55):
|dw:1454877541338:dw|
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