find how much wood was used in making a cubical pen stand of sde 9cm and thickness 2cm ​

Question

find how much wood was used in making a cubical pen stand of sde 9cm and thickness 2cm

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Rose 3 weeks 2021-08-20T03:34:56+00:00 1 Answer 0 views 0

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    2021-08-20T03:36:37+00:00

    Answer:

    Wood used is 162 cubic cm

    Step-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 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

                       = 729-567=162 cubic cm

    hope it helps.

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