Answer 1,2, and 5 are right, answers 3 and 4 are wrong.
Answer:
250 cubic m
Step-by-step explanation:
volume of the Olympic grid pool

1. 402,510 mm
2. 231,485.37529412 lbs
3.?
First you have to know how many inches are in a square cm and then the answer that you get for that first part you just multiply that by what you have but dont use a calcutor cause it wont give you the right answer because i had this before and i got it correct