Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  Independent Practice  

  • Question 7 (request help)

    A trap for insects is in the shape of a triangular prism. The area of the base is \(3.5\text{ in}^2\) and the height of the prism is 5 in. What is the volume of this trap?

  •    \(\text{ in}^3\)
  • Question 8 (request help)

    Arletta built a cardboard ramp for her little brothers’ toy cars. Identify the shape of the ramp. Then find its volume.

  • Shape:   
    Area:   \(\text{ in}^3\)
  • Question 9 (request help)

    Alex made a sketch for a homemade soccer goal he plans to build. The goal will be in the shape of a triangular prism. The legs of the right triangles at the sides of his goal measure 4 ft and 8 ft, and the opening along the front is 24 ft. How much space is contained within this goal?

  •    \(\text{ ft}^3\)
  • Question 10 (request help)

    A gift box is in the shape of a trapezoidal prism with base lengths of 7 inches and 5 inches and a height of 4 inches. The height of the gift box is 8 inches. What is the volume of the gift box?

  •    \(\text{ in}^3\)
  • Question 11 (request help)

    Explain the Error

    A student wrote this statement: “A triangular prism has a height of 15 inches and a base area of 20 square inches. The volume of the prism is 300 square inches.” Identify and correct the error.

  • Type below:

Find the volume of each figure. Round to the nearest hundredth if necessary.

  • Question 14 (request help)

    Multi-Step

    Josie has 260 cubic centimeters of candle wax. She wants to make a hexagonal prism candle with a base area of 21 square centimeters and a height of 8 centimeters. She also wants to make a triangular prism candle with a height of 14 centimeters. Can the base area of the triangular prism candle be 7 square centimeters? Explain.

  •    

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