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Open Up - Grade 7 - Mathematics - Unit 3 - Lesson 7

Last updated 11 months ago

7 questions

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Question 1

1.

Below are some graphs.

The x-axis of each graph has the diameter of a circle in meters. Label the y-axis on each graph with the appropriate measurement of a circle: radius (m), circumference (m), or area (m2)

Question 2

2.

Here is a picture of two squares and a circle. Use the picture to explain why the area of this circle is more than 2 square units but less than 4 square units.

Question 3

3.

Here is another picture of two squares and a circle. Use the picture to explain why the area of this circle is more than 18 square units and less than 36 square units.

Question 4

4.

Circle A has area 500 in2. The diameter of circle B is three times the diameter of circle A.

Estimate the area of circle B.

Question 5

5.

Lin’s bike travels 100 meters when her wheels rotate 55 times.

What is the circumference of her wheels?(Round to the nearest Hundreth)

Question 6

6.

Find the circumference of this circle. (Round the the nearest whole number)

Question 7

7.

Priya drew a circle whose circumference is 25 cm. Clare drew a circle whose diameter is 3 times the diameter of Priya’s circle.

What is the circumference of Clare’s circle?

"Source: Open Up Resouces (Download for free at openupresources.org.)"