Sharon is paving a rectangular concrete driveway on the side of her house. The area of the driveway is , and the length of the driveway is . What is the width of the driveway in terms of x?

Which one ? is the answer and how to find this answer

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe

Which will form a composite function?