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missashleyn Group Title

The bottom shape is a square prism with base edges of 3 cm and a height of 10 cm. What is the volume of the composite figure if the top shape is a right pyramid with a height of 2 cm?

  • one year ago
  • one year ago

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  1. missashleyn Group Title
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    This is the picture that was attached to the question!

    • one year ago
  2. Aperogalics Group Title
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    volume of pyramid = (1/3)*area of base* height =(1/3)*(3*3)*2=6cm^3 volume of square prism(actually rectangular prism)=l*b*h=3*3*10=90cm^3 total volume=90+6=96cm^3 :)

    • one year ago
  3. missashleyn Group Title
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    Woah, I'm confused.. I lost you at the =(1/3)*(3*3)*2=6cm^3 part. Where did all of those numbers come from? lol

    • one year ago
  4. Aperogalics Group Title
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    area of base=area of square=base edge*base edge=3*3=9cm^2 height is 2cm given so result follows:)

    • one year ago
  5. Aperogalics Group Title
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    @missashleyn got it or nt?????

    • one year ago
  6. missashleyn Group Title
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    No I don't get it, but it's okay..

    • one year ago
  7. Aperogalics Group Title
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    http://www.mathsteacher.com.au/year10/ch14_measurement/25_pyramid/21pyramid.htm try this you will get

    • one year ago
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