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Mathematics 13 Online
OpenStudy (anonymous):

The length of the base of a square pyramid is 9 inches. The slant height is 12 inches. What is the surface area of the pyramid? A) 189 in2 B) 225 in2 C) 297 in2 D) 360 in2

OpenStudy (mathstudent55):

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OpenStudy (mathstudent55):

All lateral faces are congruent triangles. Find the area of one and multiply by 4. The base is a square. Find its area. Then add it all up.

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