Quantcast Word Problem - XP Math - Forums
XP Math Home Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment PDF Version

Go Back   XP Math - Forums > Mathematics > Homework Help

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 06-16-2008   #1
Equality
Guest
 
Posts: n/a
Default Word Problem

I am having some trouble with this problem. I know the answer is 7.

This is the problem...

The radius of a large pizza is 1in. less then twice the radius of a small pizza.The difference between the areas of the pizzas is 33pi in^2.Find the radius of the large pizza.

So this must be a quadratic equation.

This is the part I don't get. Should it be like this...

-33pi in^2 + 2r -1=0

Sorry couldn't find the symbol for pie. But would I multiply the -33 first? Or is my formula completely wrong.

Or maybe putting the 33 on 2 sets of formulas. One that represents the small and one the large? Then subtracting the difference? Just need a shove in the right direction.

Last edited by Equality; 06-16-2008 at 09:12 PM.. Reason: Another Thought
 
 

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 05:06 AM.


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