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OpenStudy (anonymous):
I REALLY NEED HELP PLEASE! What is the surface area of the regular pyramid given below?
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OpenStudy (anonymous):
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OpenStudy (anonymous):
area of a triangle - (ab)/2 4 similar triangle therefore, - 4 x (ab)/2 - 2ab - 2x9x7 - 126 area of square - c^2 - 9^2 - 81 therefore total surface area = 126+81 = 207
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