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. 
Answer: B
Mathematics
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Determine ? in decimal degrees, 0° ? ? ? 90°. Round results to an appropriate number of significant digits.cot ? = 1.8
A. 29.0° B. 27.0° C. 29° D. 27°
Mathematics
In the figure provided, 
. Explain why it is necessary that 
is alsocongruent to 
What will be an ideal response?
Mathematics
Solve the formula for the specified variable.F = 
C + 32 for C
A. C = 
B. C = 
(F - 32)
C. C = 
D. C = 
(F - 32)
Mathematics
Convert the rectangular coordinates to polar coordinates. Express the answer in degrees, using the smallest possible positive angle. Round r to the nearest tenth, if necessary, and round ? to the nearest tenth of a degree.(2, 4)
A. (4.5, 63.4°) B. (4.5, - 63.4°) C. (4.5, 243.4°) D. (4.5, - 243.4°)
Mathematics