Processing math: 100%
 
+0  
 
0
755
1
avatar

The napkin ring pictured is to be resilvered. How many square millimeters must be covered in terms of pi?

 

 Sep 12, 2020
 #1
avatar+605 
+1

2πrh=2π52=20π. Now for top and bottom. Top is 52π22π=25π4π=21π, and so is bottom. So ans is 20π+21π+21π=62π.

 Sep 12, 2020

2 Online Users