Quantcast geometry math? - XP Math - Forums
XP Math Home Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment PDF Version

Go Back   XP Math - Forums > Welcome > Off-Topic Discussion

Reply
 
Thread Tools Display Modes
Old 07-17-2007   #1
wolf_in_da_room
Guest
 
Posts: n/a
Default geometry math?

The perimeter of a church window is 60 inches. If the window is in the shape of a regular pentagon, what is the length of each side of the window? A. 12 inches B. 10 inches C. 6 inches D. 8 inchesa?What is the circumference of a circle with a diameter of 30 centimeters? A. 188.4 centimeters B. 47.1 centimeters C. 94.2 centimeters D. 9.55 centimetersc? The spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, how long is each spoke? Round your answer to the nearest hundredth. A. 7 inches B. 6.25 inches C. 13.38 inches D. 6.69 inchesd? In order for a button to fit through its buttonhole, the hole needs to be the size of the button's diameter. What size buttonhole is needed for a button with a circumference of 9.42 centimeters? A. 3 centimeters B. 6 centimeters C. 1.5 centimeters D. 4 centimetersa?
  Reply With Quote
Old 07-17-2007   #2
cattbarf
Guest
 
Posts: n/a
Default

DO YOU REALLY NEED SOMEONE TO do a calculation of Circumference = pi * D or 2*pi*R ? Surely you jest!!
  Reply With Quote
Old 07-17-2007   #3
yeeeehaw
Guest
 
Posts: n/a
Default

(1) AA pentagon has 5 sides. 60/5 = 12"(2) CCirc = D*pi = 30*3.14159 = 94.248(3) DCirc = 2*pi*r ==>42 = 2*3.14159*rr = 6.6845(4) ACirc = pi*D ==>9.42 = 3.14*DD = 3
  Reply With Quote
Old 07-17-2007   #4
Howard
Guest
 
Posts: n/a
Default

A 12c 92.24d 6.68a 3
  Reply With Quote
Old 07-17-2007   #5
hrhbg
Guest
 
Posts: n/a
Default

1) A 12 in. 60/5 sides = 122) C=d*pi=30*3.14=94.2 cm3) C=2pi*r...42=2pi*r....42/(2pi) = 6.69 in.4) C=pi*d...9.42=pi*d....9.42/pi = 3 cm
  Reply With Quote
Old 07-17-2007   #6
d_c
Guest
 
Posts: n/a
Default

relax, cat.your answers are all correct.
  Reply With Quote
Old 07-17-2007   #7
websurfer09
Guest
 
Posts: n/a
Default

60/5=12, so A is correct.30/2*2pi=9434, so C is correct.42/2pi=6.69, so D is correct.9.42/2pi=3, so A is correct.
  Reply With Quote
Old 07-17-2007   #8
david p
Guest
 
Posts: n/a
Default

love the questions one at a time first 10 inches
  Reply With Quote
Old 07-17-2007   #9
JEWfan2
Guest
 
Posts: n/a
Default

1. A2. C3. D4. A































en.wikipedia.org
  Reply With Quote
Old 07-17-2007   #10
sweet girl
Guest
 
Posts: n/a
Default

1) a) coz pentagon is 5 sides 60/5=122) b) coz C= p*d 30 * 3.14= 47.13) d)4) a)
  Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:58 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XP Math