Date:
CIRCLES
Name:
Class:
I
What is the definition of a circle?
6
A
B
C
2
set of all the points in a plane that are the same distance from
one point in the plane
A set of all the points in a plane that are the same distance from
any point in the plane
A
A round shape that contains empty space
7
The distance across the circle, through
The distance from the center
About 25 cm
About 15 cm
tYhat is the diameter ol a circle with a radius of 5 cm?
its center
to any point on the circle
A
B
C
10cm
25cm
5cm
What is the radius of a circle?
8
lVhat is the area of a circle with a radius ol l0 cm?
The distance around the circle
The distance across the circle, through its center
The distance from the center
to any point on the circle
A
B
C
About 31.4 square cm
About 314 square cm
About 100 sguare cm
What is the circumlerence of a circle?
A
B
G
5
r
About 35 cm
The distance around the circle
A
B
C
4
A
B
C
with a diameter of I
What is the diameter of a circle?
A
B
C
3
What is the circumlerence of a circle
cm?
9
What is the area ol a circle with a diameter of
l0 cm?
The distance around the circle
The area of the circle
The distance from the center
to any point on the circle
A
B
C
About 79 square cm
About 55 square cm
About 125 sguare cm
lUhat variable would you use to calculate the area or
circumference of a ciicle?
A3
Bx
cPi
1$
A
B
C
What is the area ol a circle with a radius of 12 cm?
About 144 sguare cm
About 179 sguare cm
About 452 square cm
Brain
Date:
Pl
Name:
mP'
Class:
{ t" "i:
|
,[ rrrd'e s clrc,umference relers to its:
A
6 lf;5llriiJ,iJ:JPproximate
,.::
A
B
R :r: -.
a
--
l'l
..::".-::
L.
?
tilllfiitrli
r€
i : .: e s circumference by its diameter
,.
E
-
c
- r' :€ r : r:
n
- ' :: : : ': e's radius by its circumference
i
i i : -: e's diameter by its circumference
*
mil
e's circumference by its radius
tol*'
use the pi svmbol to represent a number?
A
iu:,:'i-:t i ;ns prefer using lettcdo
ts
-
C
D
4
--i '-rle:
numbers
is rational
ll" : -: :1e ::tual number would be impossible
o{ tlne fdlowing is a true statement about irrational
iilfuilulllfiilhnns?
A
B
C
D
$
A
rrl
lE
fl
fi
--i r i'p c:e:
u
--r r l!-
i-
-':,
::e- :':r3:i:: :: :-e sc-:'€ -D':- :'-€li'. ri
fllll'lhtmr*rin
:.-:
o'f tllrle
'r' DE
8.(Dt€ssei as Fon-terminating' ncn-tepeal nq
f,ullllonmillntnq
5d
trllllrn Eilatiemrumrt alhru*ut ul?
h#!l-,.t*i:l ,l,ir-t! lis;::''ry-g! i:
'fi
j i''t.'jl
-'**
rgll::lrxitr
,,,;ntt
)rrrt1
':i
xjg'|""'nr4t;
fllrr*lit l]:!iltll'*tr
'liit liiltrrltli'lliiliiiirtt(
E:
'.-e lrPlii'ar-rl
x;nu
l]j1nury"lEt1r;il
'r'un :tlE fimrnan
gu lirre '*:nr:[ium
Ii*
A
B
C
D
515.44 square cm
43.96 square cm
153.86 square cm
87.92 square cm
a
A 62.8 cm
B 31.4 cm
C 314 cm
D 628 cm
o' The circumference ol a circle is 75.36 cm. What is its
radius? Round pi to the hundredths place.
expressed as improper fractions
l- ' :{ :r 3m a'e reoeating decimals
::: -,: !
3.r5
8 lilir,.illii approximate circumference of a circle with
",: - . -Lie: is never used in algebra
il1#ilfinnclu
3.14
D 3.12
is the approxinate area of a circle with a diameter ol
7- What
14 cm?
ynu do to obtain pi?
A
"
3.17
c
rnmnurst
the value of pi, which number
ri:-,1 'ii:'
:o1l6flitl-5
mrunmmDrq
A
B
C
B
n0
re
12cm
10cm
14 cm
15rThe area of a circle ls 12.56 s uare centimeters. What is its
radilqs? Romd
to the hundrddths place.
i
A Icr
B '!:ti
C 3
D 2cm
,i 1999-2011 kainPOP. All riqhts reserved. Visit
c.:n
us at www.brainpop.com
Name:..
- *
ffi&Yffi
i
'
i.l: i--:i' ]ii,i::'ii .li
1',
Date:
"
=
'i::
&H{}MEYRV &ffiffi ffige$WffinffigwY > sxffiffituffi$
DEFINE
can you explain the terms below in your own words?
CIRCLE:
PtAl{E (I1{ GEOMETRY):
DIAMETER:
RADIUS:
CIRGUMFERENGE:
PI:
AREA (IN GEOMETRYI:
Choose an additional term from the movie
to define.
....
ttley ?1, ?Q!!