A closed rectangular wooden box is made of of thickness 0.5 cm. Its external dimensions are 30 cm by 20 cm by 12 cm. Find its internal dimensions, its external volume, its internal volume and the volume of wood needs in making the box.
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Internal Dimensions: 29, 19, 11
External Vol. = 30×20×12 = 7200
Internal Vol. = 29×19×11 = 6061
Vol. of Wood required = 1139
External Vol. = 30×20×12 = 7200
Internal Vol. = 29×19×11 = 6061
Vol. of Wood required = 1139
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