Distance around a circle

Answer Key - Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   Ari rolls a round button once along a line. The track is its circumference, about 3.14 diameters long. It rolls like it has somewhere to be. How long is the track in cm?

   9.42
2. 2.

   Esme rolls a round hand mirror once along a line. The track is its circumference, about 3.14 diameters long. It waves at every square. How long is the track in cm?

   28.26
3. 3.

   Jun rolls a round plate once along a line. The track is its circumference, about 3.14 diameters long. It is very good at rolling. How long is the track in cm?

   47.1
4. 4.

   Kira rolls a round pizza once along a line. The track is its circumference, about 3.14 diameters long. The pizza is on a very round adventure. How long is the track in cm?

   109.9
5. 5.

   Luz's button has a radius of 2.5 cm. Two radii make its diameter, and the circumference is about 3.14 diameters. It has four holes and no complaints. What is the circumference in cm?

   15.7
6. 6.

   Milo's cookie has a radius of 3.5 cm. Two radii make its diameter, and the circumference is about 3.14 diameters. It is not going to last long. What is the circumference in cm?

   21.98
7. 7.

   Noah's hand mirror has a radius of 5.5 cm. Two radii make its diameter, and the circumference is about 3.14 diameters. It likes what it sees. What is the circumference in cm?

   34.54
8. 8.

   Ren's dish has a radius of 12.5 cm. Two radii make its diameter, and the circumference is about 3.14 diameters. It has a blue stripe. What is the circumference in cm?

   78.5
9. 9.

   Ari lays string once around a round plate and measures both. The plate held very still. How many diameters long is the string, to the nearest hundredth?

   3.14
10. 10.

    Bo lays string once around a round clock face and measures both. Time did not stop for the string. How many diameters long is the string, to the nearest hundredth?

    3.15