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Homework Statement
In Problems 1-5, let R be the region bounded by y = x^2 + 3, y = 2x, x = 0, and x = 4. Each problem will describe the cross sections of a solid that are perpendicular to the x-axis. Write an integral expression that can be used to find the volume of the solid (do not evaluate).
Problem #1. The cross sections are squares with one edge in R.
Homework Equations
The Attempt at a Solution
A=s^2
A(x)= (x^2+3)^2 + (2x)^2
Int[0,4](x^4+10x^2+9)