WorksheetsFormulas for Circles
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
The perimeter (outside, or distance around) a circle
a)
circumference
b)
area
2.
The space inside a circle
a)
circumference
b)
area
3.
C =
a)
circumference
b)
area
4.
A =
a)
circumference
b)
area
5.
The distance across a circle.
a)
diameter
b)
radius
6.
The distance from the center to the outside of a circle.
a)
diameter
b)
radius
7.
diameter =
a)
radius x radius
b)
radius x 2
c)
21 radius
8.
radius =
a)
2 x diameter
b)
diameter x diameter
c)
21 diameter
9.
Pi ( π )
a)
3.14
b)
r2
10.
d =
a)
diameter
b)
radius
11.
r =
a)
diameter
b)
radius
12.
What is the formula for circumference using diameter?
a)
C = 2πr
b)
C = πd
c)
A = πr2
13.
What is the formula for circumference using radius?
a)
C = 2πr
b)
C = πd
c)
A = πr2
14.
What is the formula for area?
a)
C = 2πr
b)
C = πd
c)
A = πr2
15.
r2 =
a)
radius x 2
b)
radius x radius
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