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for a and b use x= Square root x and g(x)=x/2 a)      Find the arc length...

for a and b use x= Square root x and g(x)=x/2

a)      Find the arc length of the curve of f(x) for 0≤x≤4.                  

b)      Find the surface area of the solid of revolution revolved about the x-axis of

            f(x) for 0≤x≤4.

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