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•INTERNAL LENGTH =20-(2×0.5)=20-1=19cm
•INTERNAL BREADTH =18-(2×0.5)= 18-1=17cm
•INTERNAL HEIGHT =15-0.5= 14.5cm
INTERNAL VOLUME = 19×17×14.5
=4683.5cm^3
EXTERNAL VOLUME =20×18×15
=5400 cm^3
VOLUME OF WOOD =
EXTERNAL VOLUME - INTERNAL VOLUME
5400-4683.5
=716.5 cm^3
•INTERNAL BREADTH =18-(2×0.5)= 18-1=17cm
•INTERNAL HEIGHT =15-0.5= 14.5cm
INTERNAL VOLUME = 19×17×14.5
=4683.5cm^3
EXTERNAL VOLUME =20×18×15
=5400 cm^3
VOLUME OF WOOD =
EXTERNAL VOLUME - INTERNAL VOLUME
5400-4683.5
=716.5 cm^3
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