O.4

원의 둘레와 넓이

4분기 (4~6월)

π ≈ 3.14를 이용해 원의 반지름·지름·둘레·넓이 구하기

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문제 수
Daniel Math Academy · Grade 6 Math

Circumference & Area of Circles

Skill O.4 · Circles · ★★☆ Medium · Quarter 4

Name
 
Date
 
Score/ 6

Use π ≈ 3.14. Include units in your answers.

Example
d = 10 cm
C =31.4 cm

Think: . If you are given the radius, double it first.

  1. 1
    r = 12 m
    Find the circumference. 
  2. 2
    r = 7 cm
    Find the circumference. 
  3. 3
    d = 14 in
    Find the circumference. 
  4. 4
    d = 30 mm
    Find the circumference. 
  5. 5
    r = 4 ft
    Find the circumference. 
  6. 6
    r = 15 cm
    Find the circumference. 
Daniel Math Academy · danielmath.comWorksheet #xmxgbub · Page 1 / 2
Daniel Math Academy · Grade 6 Math

Answer Key

O.4 Circumference & Area of Circles · ★★☆ Medium

  1. 175.36 m
  2. 243.96 cm
  3. 343.96 in
  4. 494.2 mm
  5. 525.12 ft
  6. 694.2 cm
Daniel Math Academy · danielmath.comWorksheet #xmxgbub · Answer Key · Page 2 / 2