Area of a Circle Sector From Fraction to Area (Closest Integer) (Level 1)

This math topic focuses on calculating the area of a circle sector, involving understanding geometric properties and applying the formula for the area of a sector. Students are required to compute the area for sectors of varying circle radii and sector proportions (e.g., 1/2, 3/4, 1/4 of the circle), rounding their answers to the closest integer. Each problem presents a different scenario, helping learners to practice the conversion of fractional parts of a circle into area measurements, enhancing both their geometry and fraction skills.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

Area of a Circle Sector From Fraction to Area (Closest Integer) Worksheet

Math worksheet on 'Area of a Circle Sector From Fraction to Area (Closest Integer) (Level 1)'. Part of a broader unit on 'Geometry - Circle Area, Sectors and Donuts - Intro' Learn online: app.mobius.academy/math/units/geometry_circles_sector_donut_area_logic_intro/

1

Find the area (to the closest integer) of the green shaded sector that covers 1/4 of the circle with radius 2

a

12

b

11

c

4

d

6

e

9

f

3

2

Find the area (to the closest integer) of the green shaded sector that covers 3/4 of the circle with radius 2

a

9

b

18

c

4

d

7

e

2

f

16

3

Find the area (to the closest integer) of the green shaded sector that covers 1/2 of the circle with radius 6

a

82

b

57

c

77

d

17

e

37

f

97

4

Find the area (to the closest integer) of the green shaded sector that covers 1/2 of the circle with radius 4

a

15

b

39

c

21

d

25

e

27

f

43

5

Find the area (to the closest integer) of the green shaded sector that covers 1/2 of the circle with radius 1

a

4

b

11

c

6

d

2

e

5

f

1

6

Find the area (to the closest integer) of the green shaded sector that covers 3/4 of the circle with radius 4

a

29

b

65

c

44

d

56

e

38

f

20

7

Find the area (to the closest integer) of the green shaded sector that covers 3/4 of the circle with radius 1

a

2

b

7

c

10

d

4

e

8

f

3