This math topic focuses on calculating the circumference of a circle given its diameter. It encourages practicing the formula for circumference, \(C = \pi \times \text{diameter}\), using an approximate value for π (a bit more than 3), which simplifies the calculation without a calculator. It covers basic to intermediate problems, teaching students to accurately apply the formula and understand the relationship between diameter and circumference. The outlined problems show varying levels of difficulty and multiple-choice answers to encourage self-assessment and reinforcement of the concept.

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

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Circumference from Diameter Worksheet

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Math worksheet on 'Circumference from Diameter (Level 1)'. Part of a broader unit on 'Geometry - Circle Area and Circumference - Practice' Learn online: app.mobius.academy/math/units/geometry_circles_perimeter_area_practice/
1
An svg image showing a math problem
Find the circumference without using a calculator. Remember that π is just a bit more than 3.
a
12.5
b
19.63
c
40.84
d
15.71
e
21.99
f
5
2
An svg image showing a math problem
Find the circumference without using a calculator. Remember that π is just a bit more than 3.
a
4.71
b
4.5
c
7.07
d
3
e
9.42
f
28.27
3
An svg image showing a math problem
Find the circumference without using a calculator. Remember that π is just a bit more than 3.
a
10
b
15.71
c
50
d
31.42
e
78.54
f
50.27
4
An svg image showing a math problem
Find the circumference without using a calculator. Remember that π is just a bit more than 3.
a
24.5
b
11
c
21.99
d
38.48
e
40.84
f
34.56
5
An svg image showing a math problem
Find the circumference without using a calculator. Remember that π is just a bit more than 3.
a
21.99
b
9.42
c
34.56
d
3
e
4.71
f
7.07
6
An svg image showing a math problem
Find the circumference without using a calculator. Remember that π is just a bit more than 3.
a
17.28
b
11
c
40.84
d
47.12
e
34.56
f
95.03
7
An svg image showing a math problem
Find the circumference without using a calculator. Remember that π is just a bit more than 3.
a
60.5
b
11
c
34.56
d
17.28
e
95.03
f
47.12