Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  Independent Practice  

For 11–13, find the circumference of each circle. Use 3.14 or \(\mathbf{\frac{22}{7}}\) for π. Round to the nearest hundredth, if necessary.

  • Question 14 (request help)

    In Exercises 11–13, for which problems did you use \(\frac{22}{7}\) for π? Explain your choice.
  • Type below:
  • Question 15 (request help)

    A circular fountain has a radius of 9.4 feet. Find its diameter and circumference to the nearest tenth.
  • d =     ft
    C =     ft
  • Question 16 (request help)

    Find the radius and circumference of a CD with a diameter of 4.75 inches.
  • r =     in
    C =     in
  • Question 17 (request help)

    A dartboard has a diameter of 18 inches. What are its radius and circumference?
  • r =     in
    C =     in
  • Question 18 (request help)

    Multistep

    Randy’s circular garden has a radius of 1.5 feet. He wants to enclose the garden with edging that costs $0.75 per foot. About how much will the edging cost? Explain.
  • $    
  • Question 19 (request help)

    Represent Real-World Problems

    The Ferris wheel shown makes 12 revolutions per ride. How far would someone travel during one ride?
  •     ft
  • Question 20 (request help)

    The diameter of a bicycle wheel is 2 feet. About how many revolutions does the wheel make to travel 2 kilometers? Explain. Hint: 1 km ≈ 3,280 ft
  •     revolutions
  • Question 21 (request help)

    Multistep

    A map of a public park shows a circular pond. There is a bridge along a diameter of the pond that is 0.25 mi long. You walk across the bridge, while your friend walks halfway around the pond to meet you at the other side of the bridge. How much farther does your friend walk?
  •     mi

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