A Phonograph Turntable Is Made in the Shape of a Circular

question 199

Multiple Choice

A phonograph turntable is made in the shape of a circular disk of radius 6 inches with density function $p ( x , y ) = \sqrt { x ^ { 2 } + y ^ { 2 } }$ . Find the mass of the disk.

• A)60\(\pi\)
• B)96\(\pi\)
• C)108\(\pi\)
• D)120\(\pi\)
• E)144\(\pi\)
• F)180\(\pi\)
• G)192\(\pi\)
• H)240\(\pi\)

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