2. the great pyramid outside cairo, egypt, has a square base measuring 756 feet
on a side and...
Mathematics, 24.10.2019 01:00 lydiapoetz2414
2. the great pyramid outside cairo, egypt, has a square base measuring 756 feet
on a side and a height of 480 feet.
a. [3 pts] what is the volume of the great pyramid, in cubic yards?
b. [2 pts] the stones used to build the great pyramid were limestone blocks
with an average volume of 1.5 cubic yards. assuming a solid
pyramid, how many of these blocks were needed to construct the
great pyramid?
Answers: 3
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Prove (a) cosh2(x) β sinh2(x) = 1 and (b) 1 β tanh 2(x) = sech 2(x). solution (a) cosh2(x) β sinh2(x) = ex + eβx 2 2 β 2 = e2x + 2 + eβ2x 4 β = 4 = . (b) we start with the identity proved in part (a): cosh2(x) β sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 β sinh2(x) cosh2(x) = 1 or 1 β tanh 2(x) = .
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