+0  
 
0
316
1
avatar

a roof has a surface area of 4.8 square feet what is the surface area of a similar roof that is larger by a scale factor of 3

Guest May 22, 2017
 #1
avatar+88871 
+1

 

 

The  new roof wil have an area  = (scale factor)^2 * ( old roof area)  =

 

(3)^2  *  (4.8)  =

 

9  * 4.8   =

 

43.2   sq ft

 

[ Think about it like this......each dimension , width and length, is 3 times as large ...so old area  = L * W.....and new area  = 

3L * 3W   =  9(L * W) ]

 

 

cool cool cool

CPhill  May 22, 2017

50 Online Users

avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.