Answer: 12.48 
Step-by-step explanation:
38x38+bxb=40x40
1444+b=1600
1600-1444=156
 =12.48
=12.48
 
        
             
        
        
        
I hope this helps you 
volume of cylinder =pi.r^2.h
volume =3,14×6^2×15
volume = 1695,6
1695,6÷15=113,04
        
             
        
        
        
Answer:
A) 10^23
Step-by-step explanation:
if bases are the same and you're multiplying then:
keep the base and add the exponents
 
        
             
        
        
        
Answer:
363
Step-by-step explanation:
11x11=121
((11x11)÷2)x4=11x11x2=121x2=242
121+242=363