ok so they’re asking for the difference between the lengths of the sides of each cube. they have different SA’s (surface areas). all you gotta do is plug in the SA in the given equation to find the length of the side and THEN you subtract the answers and thats how you find the difference between the sides.
given: s = √(SA/6) SA1 = 240 m^2 SA2 = 180 m^2
S1 = √(240/6) = 2√10 or 6.32 S2 = √(180/6) = √30 or 5.47
259 divided by 170,000 gives you the % 259 is out of 170,000 which is .0015. Move the decimal two spaces to the right to get the actual commission rate=.15%
