a box with a lid is made of 2cm thick wood.Its external dimensions are 25cm×18cm×15cm.how many cubic cm of rice can be placed in it? also find the volume of wood used in the box
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given, thickness of wood = 2cm
external dimensions = 25cm×18cm×15cm
internal dimensions = 25-2cm×18-2cm×15-2cm = 23cm×16cm×13cm
cubic cm of rice can be placed in it = internal volume of the box = 23×16×13 = 231,613 cm³
volume of wood used in the box = (25×18×15) - (23×16×13) = 231613 cm³
external dimensions = 25cm×18cm×15cm
internal dimensions = 25-2cm×18-2cm×15-2cm = 23cm×16cm×13cm
cubic cm of rice can be placed in it = internal volume of the box = 23×16×13 = 231,613 cm³
volume of wood used in the box = (25×18×15) - (23×16×13) = 231613 cm³
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