Find the number $b$ such that the line $y = b$ divides the region bounded by the curves $y = x ^ { 2 }$ and $y = 4$ into two regions with equal area.
Select the correct answer.
A) $4 ^ { 1 / 2 }$
B) $\frac { 1 } { 3 }$
C) $\frac { 2 } { 3 }$
D) $4 ^ { 2 / 3 }$
E) $4 ^ { 1 / 3 }$

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The Answer of Find the number $b$ such that the line $y = b$ divides the region bounded by the curves $y = x ^ { 2 }$ and $y = 4$ into two regions with equal area.
Select the correct answer.
A) $4 ^ { 1 / 2 }$
B) $\frac { 1 } { 3 }$
C) $\frac { 2 } { 3 }$
D) $4 ^ { 2 / 3 }$
E) $4 ^ { 1 / 3 }$

Find the Number bbb Such That the Line y=by = by=b Divides the Region Bounded by the Curves

Find the Number $b$ Such That the Line $y = b$ Divides the Region Bounded by the Curves