CPM Homework Help : CALC Problem 8-112

The base of a solid with square cross-sections perpendicular to the $x$ -axis is bounded by the curves $y = −x^2 + 4$ and $y = x^2 − 4$ . Set up an integral to calculate the volume. Do not solve.

Hint 1:

Area of a square $=$ (side) $^{2}$

Hint 2:

Imagine a square that is built on the line connecting the top and bottom function. Write an expression for the length of the side of the square. Use symmetry to simplify the expression.

Use the eTool below to help solve the problem.
Click on the link to the right to view the full version of the eTool. Calc 8-112 HW eTool