Given the side and thickness of cubical pen stand 9 cm and 2 cm respectively of cubical pen stand which was made by using woof. we have to find that how much wood was used

Volume of cube of side 9 cm is

Now, given that the thickness is 2 cm, then the side of inner cube will become 9-2-2=7 cm. But the top was open so at the top due to thickness the volume is calculated as 9(9)(7)=567 cubic cm

Wood used is Volume of outer cube – volume of inner

## Answers ( )

Answer:Wood used is 162 cubic cmStep-by-step explanation:Given the side and thickness of cubical pen stand 9 cm and 2 cm respectively of cubical pen stand which was made by using woof. we have to find that how much wood was usedVolume of cube of side 9 cm isNow, given that the thickness is 2 cm, then the side of inner cube will become 9-2-2=7 cm. But the top was open so at the top due to thickness the volume is calculated as 9(9)(7)=567 cubic cmWood used is Volume of outer cube – volume of inner= 729-567=162 cubic cmhope it helps.