Jacks are is three years more twice the age of his younger brother jimmy if the sum of their age is at most 18 find the greatest age that jimmy could be

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