Answer:
1) N times as long
2) 3 times as long
3) 10 times as long
4) N times as long
Step-by-step explanation:
452.39 cm is the correct answer
The names PNM and MPN are perfectly valid. The order of the letters doesn't matter. In fact, there are 6 ways to name this plane if we just use the 3 letters. If we include "plane Z", then there are 7 total ways to name the plane.
For some reason, your teacher wants P to be the third letter as s/he mentioned MNP and NMP. But again, the order doesn't matter.