Find the volume of a pyramid with a square base where the perimeter of the base is 13.4 in and the height of the pyramid is 7.6 in. Round your answer to the nearest tenth of a cubic inch. Someone PLEASE HELP!

Does anyone know how to do geometryme with this problem

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

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