Area of a Circle from Radius (Level 1)

This is a math topic centered on learning and practicing the calculation of the area of a circle from its radius. It is a part of geometry, specifically the introductory components of determining a circle's area. The topic instructs students to calculate the area without using a calculator and encourages the estimation of pi as a number slightly more than 3. The topic provides multiple-choice questions with answer options to facilitate understanding and application of the formula for finding the area of a circle.

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

Area of a Circle from Radius Worksheet

Math worksheet on 'Area of a Circle from Radius (Level 1)'. Part of a broader unit on 'Geometry - Circle Area - Intro' Learn online: app.mobius.academy/math/units/geometry_circles_area_intro/

1

Find the area without using a calculator. Remember that π is just a bit more than 3.

a

28.27

b

4

c

37.7

d

6.28

e

8

f

12.57

2

Find the area without using a calculator. Remember that π is just a bit more than 3.

a

9.42

b

9

c

18

d

131.95

e

78.54

f

28.27

3

Find the area without using a calculator. Remember that π is just a bit more than 3.

a

31.42

b

25

c

78.54

d

201.06

e

50

f

197.92

4

Find the area without using a calculator. Remember that π is just a bit more than 3.

a

12.57

b

1

c

3.14

d

78.54

e

2

f

6.28

5

Find the area without using a calculator. Remember that π is just a bit more than 3.

a

125.66

b

32

c

25.13

d

175.93

e

16

f

50.27

6

Find the area without using a calculator. Remember that π is just a bit more than 3.

a

72

b

36

c

18.85

d

113.1

e

153.94

f

254.47