+0  
 
0
94
2
avatar

A cube of side 3 inches has a cube of side 1 inch cut from each corner. A cube of side 2 inches is then inserted in each corner. What is the number of square inches in the surface area of the resulting solid?

Guest May 30, 2018
 #1
avatar+615 
+1

198 is your answer

supermanaccz  May 31, 2018
 #2
avatar+12565 
+2

Original surface area = 3 x 3 * 6 = 54 in^2

Remove 8 x 3 in^2 = 24 in^2       

add   the 2 inch cubes   surface area   2x 2 x 6  x8 = 192 in ^2

             less the surface area covered by putting in the corners  3 x 8 = 24 in^2

 

 

54 -24 + 192 - 24 = 198 in^2

ElectricPavlov  May 31, 2018
edited by Guest  May 31, 2018

18 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.