Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 McGraw Hill Glencoe - Answer Keys
Chapter 8: Measure Figures; Lesson 1: Circumference


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Copy and Solve For Exercises 10-14, show your work on a separate piece of paper.
Find the diameter given each circumference. Use 3.14 for \(\pi\).

  • Question 10 (request help)

    a satellite dish with a circumference of 957.7 meters
  • \(d\approx\)   meters
  • Question 11 (request help)

    a basketball hoop with a circumference of 56.52 inches
  • \(d\approx\)   inches
  • Question 12 (request help)

    a nickel with a circumference of about 65.94 millimeters
  • \(d\approx\)   millimeters

Find the distance around each figure. Use 3.14 for \(\pi\).

 

  • Question 15 (request help)

    Justify Conclusions Determine if the circumference of a circle with a radius of 4 feet will be greater or less than 24 feet. Explain.
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  • Question 16 (request help)

    Model with Mathematics Draw and label a circle that has a diameter more than 5 inches, but less than 10 inches. Estimate its circumference and then find its circumference using a calculator. Compare your results.
  • Question 17 (request help)

    Persevere with Problems Analyze how the circumference of a circle would change if the diameter was doubled. Provide an example to support your explanation.
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  • Question 18 (request help)

    An above-ground circular swimming pool is 18 feet in diameter. How does the pool’s diameter d compare to its circumference C?
    • A. \( \text{d } \approx \frac{1}{2} \text{C}\)
    • B.\( \text{d }\approx 2 \text{C}\)
    • C.\( \text{d} \approx 3\text{C}\)
    • D. \(\text{d } \approx \frac{1}{3}\text{ C}\)

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