Can someone help me with these two questions plss

What is the midpoint of the segment below? (-4,-7) (5,6)

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

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