+0  
 
0
42
1
avatar+252 

What is the surface area of a right cylinder which has a base with radius 9 units and has a height of 12 units?

A) 508.7 units squared

B) 678.2 units squared

C) 1,186.9 units squared

D) 1,256.0 units squared

pwolfey  Oct 31, 2017
Sort: 

1+0 Answers

 #1
avatar+78729 
+2

SA  = 

 

2pi *r * h  +  2 pi * r^2  =

 

2pi * r  * [ h + r ]  =

 

2 * 3.14 *  9  * [ 12 + 9 ]  =  1186.9 units^2

 

 

cool cool cool

CPhill  Oct 31, 2017

7 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details