Answer:
first of all wow this is not the easiest. But i figured out some of it i hope this helps! :)
Step-by-step explanation:
100 cm=1 m
20 cm=30
1 m=2 hr and 30 minutes
for the prism i know what is missing( .80) is missing for the side. I really hope this helps i am sorry i could not figure out the rest.
