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a square pyramid has a total surface area of 1000 feet. the area of the base is 200 square feet. what is the area of one triangular face of the lateral surface?
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it is 200 feet if all the faces are equal
TSA=sa of base + sa of trianglular faces so sa of triangular faces = 1000-200=800 now there are 4 triangles between which this 800 is equally divided so the area of one triangular face becomes 200
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