Ibelieve it's a, but am i correct?

which measurement is the greatest?

a) 6 kilometers

b) 60 meters

c) 600 centimeters

d) 6,000 millimeters

The number of pages in the u.s. tax code exceeds the number of pages in the king james bible by 18,528. the combined number of pages in the tax code and the bible is 21,472

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

Ithink i know it but i want to be sure so can you me out ?