Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys


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  Independent Practice  

  • Question 1 (request help)

    The surface area of a rectangular prism is 95 squre centimeters. What is the surface area of a similar solid with dimensions that are 4 times as great as the original prism?
  •     \(\text{cm}^{2}\)
  • Question 2 (request help)

    The surface area of a pyramid is 57.8 squre inches. What is the surface area of a similar pyramid with dimensions that are 2 times as great as the original prism?
  •     \(\text{in.}^{2}\)
  • Question 3 (request help)

    A cereal box has a surface area of 280 square inches. What is the surface area of a similar box that is larger by a scale factor of 1.4?
  •     \(\text{in.}^{2}\)
  • Question 4 (request help)

    A glass display box has a surface area of 378 square inches. How many square inches of glass are used to create a glass display box with dimensions that are one-half those of the original?
  •     \(\text{in.}^{2}\)
  • Question 5 (request help)

    A cone has a volume of 9,728 cubic millimeters. What is the volume of a similar cone with dimensions that are one-eighth the dimensions of the original?
  •     \(\text{mm}^{3}\)
  • Question 6 (request help)

    A triangular prism has a volume of 350 cubic meters. If the dimensions are tripled, what is the volume of the new prism?
  •     \(\text{m}^{3}\)
  • Question 7 (request help)

    The model of a new apartment building is shown. The architect plans for the building to be 144 times the dimensions of the model. What will be the volume and surface area of the new building when it is completed?
  • Volume:     \(\text{ft}^{3}\)
    Surface Area:     \(\text{ft}^{2}\)

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