Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 McGraw Hill Glencoe - Answer Keys
Chapter 8: Measure Figures; Lesson 2: Area of Circles


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Find the area of each circle. Round to the nearest tenth. Use 3.14 or \(\frac{22}{7}\) for \(\pi\).

  • Question 6 (request help)

    radius = \(3\frac{1}{4}\)yd
  • \(A\approx\)    \(yd^2\)
  • Question 7 (request help)

    Refer to the pets problem at the beginning of this lesson. Find the area, to the nearest tenth, of grass that Adrianne’s dog may run in if the leash is 9 feet long.
  • \(A\approx\)    \(ft^2\)
  • Question 8 (request help)

    A rotating sprinkler that sprays water at a radius of 11 feet is used to water a lawn. Find the area of the lawn that is watered. Use 3.14 for \(\pi\).
  • \(A\approx\)    \(ft^2\)

Find the area of each semicircle. Round to the nearest tenth. Use 3.14 for \(\pi\).

  • Question 12 (request help)

    The tunnel opening shown is a semicircle. Find the area, to the nearest tenth, of the opening of the tunnel enclosed by the semicircle.
  • \(A\approx\)    \(ft^2\)

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