Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  • Question 20 (request help)

    Communicate Mathematical Ideas

    You can use the formula \(\text{A} = \frac{C^2}{4\text{π}}\) to find the area of a circle given the circumference. Describe another way to find the area of a circle when given the circumference.
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  • Question 21 (request help)

    Draw Conclusions

    Mark wants to order a pizza. Which is the better deal? Explain.
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  • Question 22 (request help)

    Multistep

    A bear was seen near a campground. Searchers were dispatched to the region to find the bear.

    a. Assume the bear can walk in any direction at a rate of 2 miles per hour. Suppose the bear was last seen 4 hours ago. How large an area must the searchers cover? Use 3.14 for \(\text{π}\). Round your answer to the nearest square mile.
  •    \(\text{ mi}^2\)
  • Question 22 (request help)

    b. What If? How much additional area would the searchers have to cover if the bear were last seen 5 hours ago?
  •    \(\text{ mi}^2\)

  H.O.T.  

  Focus on Higher Order Thinking  

  • Question 23 (request help)

    Analyze Relationships

    Two circles have the same radius. Is the combined area of the two circles the same as the area of a circle with twice the radius? Explain.
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  • Question 24 (request help)

    Look for a Pattern

    How does the area of a circle change if the radius is multiplied by a factor of n, where n is a whole number?
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  • Question 25 (request help)

    Represent Real World Problems

    The bull’s-eye on a target has a diameter of 3 inches. The whole target has a diameter of 15 inches. What part of the whole target is the bull’s-eye? Explain.
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