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A Thin Wire Is Bent into the Shape of a Semicircle

Question 124

Multiple Choice

A thin wire is bent into the shape of a semicircle x2+y2=4,x>0x ^ { 2 } + y ^ { 2 } = 4 , x > 0 If the linear density is 44 , find the exact mass of the wire.


A) 3π3 \pi
B) 18π18 \pi
C) 8π8 \pi
D) 8π28 \pi ^ { 2 }
E) 2π2 \pi

Correct Answer:

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