Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys


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  Guided Practice  

  • Question 1 (request help)

    The surface area of a rectangular prism is 35 squre inches. What is the surface area of a similar solid with dimensions that have been enlarged by a scale factor of 7?

  •     \(\text{in.}^{2}\)
  • Question 2 (request help)

    The volume of a cylinder is about 425 cubic centimeters. What is the volume, to the nearest tenth, of a similar solid with dimensions that are smaller by a scale factor of \(\cfrac{1}{3}\)?

  •     \(\text{cm}^{3}\)
  • Question 3 (request help)

    A sink with a sliding lid in Josh's art studio measures 16 inches by 15 inches by 6 inches. A second sink used just for paintbrushes has a similar shape and is smaller by a scale factor of \(\cfrac{1}{2}\). Find the volume and surface area of the second sink.

  • Volume:     \(\text{in.}^{3}\)
    Surface Area:     \(\text{in.}^{2}\)
  • Question 4 (request help)

    Building on the Essential Question How is the volume of a prism affected when its dimensions are tripled?

  • Type below:

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