Need maths help. Simple question

[TyranT]

Hello,
could i please get help for question 12b? I need to understand the concept. I know the answer to 12a. The textbook says the answer to 12b is 19mm, but i'm not getting it.
Much appreciated.
Sorry for my stupidity. Answer found.

[Bri MT]

Hey,

First of all kudos on your courage in asking for help even though you felt self-concious about it - imo that says a lot more about you as a learner/student than not getting a problem

Secondly,  here's the process:
a) (which you got)
1. 14/2  cm^3 = 7 cm^3
2. (7 cm^3)^(1/3) = 7^(1/3) cm
B)
1. 7^(1/3) cm is roughly 1.9 cm
2. cm is 10 times bigger than mm so: 1.9 cm = 19 mm

You might find this way of including units weird and you certainly don't have to do that in your working but I thought it might be useful since unit conversion is where you were stuck

Good luck & please let me know if anything in this explanation doesn't make sense

[TyranT]

Thank you