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The mass of the Great Pyramid is 557t greater than that of the Leaning Tower of Pisa. Stone Henge has a mass of 2695t, which is 95t less than the Leaning Tower of Pisa. There once was a Greater Pyramid which had a mass twice that of the Great Pyramid. What was the mass of the Greater Pyramid.

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mass 0f leaning tower of pisa= mass of stone henge + 95 = 2695+95 = 2790
mass of great pyramid= mass of leaning tower of pisa + 557 = 2790 + 557 = 3347
the mass of greater pyramid = 2*3347 = 6694
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