a
X
Si $ ln
For ExercisesI and 2, use the drawing
at the right, which
showsa personstandingnext to a construction
scafiofd.
| 1. Find the approximate
heighrof the scaffoldif the
person ts
a. 6 feettall
Sinc.e, d\e, so,}Fo\d,
to,\\/ do 6$t r
$ :
b. 5 feet 6 inchestall
SSt (oi .. x b=
Reeu\Reci
PKOFNITN
'.s 5 pop\q
,r-r-t-fZ\-----.._-
39b*\\
2 b Ft bOi...
(tr\-,
=
251... t 29q 6',^
t
2{i.r
= 2-l $t
6 t,..
2. Find the approximate
heightof the personif the
scaffoldis
a. 2g feet 1"11$Aboqr S ls J i^
scollo\d .,r
Sine.e lhe
F
-r Peog\q
ta\\,
3:.\"j$"\
sco$lo\cl\
L\e
eer5*.!
, sFr
5\ 28
25
- 3
t\e
.-
2 . in
-1ef ;^
t Fo",c
i r 12 ',-r
-I i'r
-IstZ
e',^
b5
-fa-fi ^
tlrot ne,co'
vt.
ro brc sglit
,
I 9r.. Z ' . . t
ttTt
- ''6
ge\
5t3u-
I*"=
l-[ u
-1
r..'.;t^.i.
o.t,
. i' t?5',
_-
b \ 36
bS
d..v..d,e
-;S
b. 36 feet tall + Atoo.lc.
5Tttii^
---
*r -
22. circle B is an enrargementof a smailercircreA,
madewith a
two-bandstretcher.CircleA is not shown.
CircleB
a' How doesthe diameter.ofcircreB
compareto the diameterof
circteA?Cice\r b,,s is Z* €\e-G;id;'g\,s.
b' How doesthe areaof circreB compare
to the areaof circreA?
Ci..1o g'a a,f,e6. '.5
C.iri\e A,s
^\ \ir^es
c. How does the circumference
of circle B compare to
the
circumferenceof circte A?
C,i "Ct,u -ro'-s c\.crr-,.$ecer\ce
e..as,\e A I s
\ s 2 tr...o r
IA
Exercisest-111,find the perimeter (or circumference)and the areaof
each figure.
8.
pgc'.r-.e\-e-
17.5km
PCr I o F
- d',$i61,^ca
oro"'-$
o*rtSt
- 1 .b ' l \ ' 1 . 5 : $ Q L ' r n
? ' - 1 . 5 " \ - 1 .5 +
7.5km
Areo. = 9.,.^>
-1'5
fi: t-1.5'
A,= l'b \.25 k..'
Rectangle
9.
15m
t f.o
p :
^\2"^
I
I
5mi
6m
= \ 5 + (o + \b
P<1.\*.e\e,r
A.eo-
I
?- b\
A : \5 .S
Parallelogram
A = - 15 * a
Sarracq
= ^13\ , b,
P= \ O + lS* \ O
/l.3i3hE
l5 mm
A= ; , b\
( ' o'
A=+ . \o. \5
10mm
lgot€
O
A r '1$
loh\
z)
... ,..r2
12.
!:
,,;:
r*,&;\{cS
25 * 3\.6 + \\.? .
= '(f,1.g
CFFI
A- iux
A = i, '25' \ O
A= l2'5.,.'."
,5SI
Showyour work'
14, Find the givenPercentof eachnumber'
b. 80% of 120
a.25"/"of'I20
tgo'L
.L%* \zc) = 3()
.r,
Scr o..r ot. 16ct *,''L'ic..L'
rerducer t-o
( :n .{" ttz e)* S O
S,,r.-e, t .t \ ZO
€.
k c > " -e -. rk -' rp (Nb * l
.aro,a.\^l hrer:eu.,lq. \
3 ""*- "^b
<-\
:
QC.*'
2r.\ x
is
-t
, t.s
\2O'/.
"\
gO:
e. 150%of200
\(o
BCf,t\(p:
\OO /. , i
lr-:€C.a:*r.rI e f;rerCenY
rr\eo.r\ I Or,\ o! tbt).
2OO'/,
i\|r
2-16,
15. Muftiple
!
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*.e
il.tiltq
r\+er;6q
L.r\\ a"*.o\j,*-
do.*rlaa1.
l$o'/.:
\SC)
so
?-O:J'/.:
c. $7p
G.l!g
tE{)rrZ:
3043
salestaxon a $14.00
compactdisc?
ihoice what is the5o/o
A.$0.07
:: \C) z \{-.
5:
t.2A0% of150
clo*.Lde it-.
ISO L'
311C)
'
,- t.$ef
\L--.r*,,
1..../',.-'
is - l*\5 = \o f>
;5 .' lF r C)
,e )
\cJs
.Jc) x\f:( ) :
\tr)O7. oY \tS= tSO
$'.ncc.
-t
or
'*,
,-ul*l^ :,r .-!-
i 3O 'ec )"r$'
6oD
r
Q'"\\
8()
'.
- 'lt)'/. s ,]l
* ,
d. 7OY"of 150
c. 120%of80
. tt5c)7. ',. t*.a'
clmsurr'.\
l^ o . A
24,
D. $7o.oo
S7,
oB \.\
, ,os r 1!\
= tJr.'tt
dinnerin a
tip on a $25'50
ro. 9g!!!49j!9igg Whatisthe15%service
restaurant?
F. $1.70
-\
---_*
cq_uE)
H. $s.10
,. $38.2s
t 5:'. ol 2 5..So
=' $.\5
x' 25...r ( )
2 ?:.83