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!

The answer is c because you turn 17.5% into a decimal which gives you .175 then you times that by $361.35 which gives you 63.23625 but then you round that which gives you 63.24. then you at 63.24 pulse 361.35 and you round it which gives you $425

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Where's the rest of the