Blocks of stone are cut to a nominal size of 60cm x 30cm x 15cm, where measurements are correct to the nearest centimeter. Find the range of values of the volumes of a block giving your answer in the form V± pV, where V is the nominal volume and p is the percentage.

I found percentage change of higher volume with nominal and it's 5.93% and then I found percentage change of lower volume and nominal and it's 5.74% ....what's the actual answer?

https://www.jiskha.com/questions/1803187/Blocks-of-stone-are-cut-to-a-nominal-size-of-60cm-x-30cm-x-15cm-where-measurements