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missashleyn

  • 2 years ago

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?

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  1. missashleyn
    • 2 years ago
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    This is the picture that was attached to the question!

  2. Aperogalics
    • 2 years ago
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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 :)

  3. missashleyn
    • 2 years ago
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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

  4. Aperogalics
    • 2 years ago
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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:)

  5. Aperogalics
    • 2 years ago
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    @missashleyn got it or nt?????

  6. missashleyn
    • 2 years ago
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    No I don't get it, but it's okay..

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

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