Answer:
33.275
Step-by-step explanation:
<u>1 step:</u> Difference in brackets

<u>2 step:</u> 

<u>3 step:</u> 

<u>4 step:</u>

<u>5 step:</u>

 
        
             
        
        
        
a simple way to do away with denominators, is we can simply multiply both sides by the LCD, in this case the LCD is 3, so let's multiply both sides by 3.

 
        
             
        
        
        
Answer:
36000pi
Step-by-step explanation:
V = 4/3*pi*r^3  so we need to know r
we know surface area, which is 4pi*r^2=3600pi.  so we can solve for r
r=30
so v = 4/3*pi*30^3 = 36000pi
 
        
             
        
        
        
Answer:
144-36=108
Square root 108 = 10.4cm (cb) 
Soh Cah toa 
Sin(55) =o/h
  =10.4/h
xh
H x sin55 =10.4
÷sin55
H= 10.4/sin55
H=12.7cm
CD is 12.7cm to 3 s.f.