Posted by Drew on Tuesday, August 21, 2012 at 2:09pm.
I think the answer is 2.25V.
a = ∫[0,2] √(8x) dx
= √8 (2/3 x^3/2) [0,2]
= 2√8/3 (2√2)
= 16/3
a = ∫[0,4] 2-y^2/8 dy
= 4y - y^3/24 [0,2]
= 8 - 64/24
= 16/3
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