Answer:
A≅562.45π u²
Step-by-step explanation:
Knowing that the volume the a solid is V=πR²h, then A=πR², therefore
A=π(4√x), integrating on both sides ∫A=4π∫√xdx ⇒ ∫√xdx = 
evaluated (60,77), then

Answer:
A
Step-by-step explanation:
11/4 hours on the first day
21/4 hours on the second
21-11=10
10/4 hours or 2 2/4
Answer:
b is 125
Step-by-step explanation:
Answer:
y=15
Step-by-step explanation:
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A) y = 2 - 6x
B) 1/2y - x = 1
A) 6x + y =2
Multiply B) by -2
B) -y + 2x = -2 then add it to A)
8x = 0
x = 0
y = 2
Answer is A
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