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Mathematics 9 Online
OpenStudy (anonymous):

What is the surface area of this three-dimensional, symmetrical, capital letter “I” block? Show your work.

OpenStudy (anonymous):

OpenStudy (mathstudent55):

|dw:1370880665730:dw|

OpenStudy (mathstudent55):

|dw:1370880780909:dw| Each of those faces is the rectangle, 6 cm * 5 cm, minus two squares 2 cm * 2 cm. There are two of those faces. I-faces = 2 * [ (5 cm * 6 cm) - 2(2 cm * 2 cm) ]

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