Mathematics
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at 
and 
. The cross sections perpendicular to the x-axis between these planes are squares whose bases run from the semicircle 
to the semicircle 
.
A. 
B. 
C. 
D. 
Mathematics
Find the limit, if it exists.
A. 
B. -?
C. 0
D. 
Mathematics
Solve the rational equation.
+ 
= 
- 
A. ?
B. 
C. 
D. {34}
Mathematics
Simplify.
A. Not defined B. 1 C. 2 D. 0
Mathematics