Question

why 8/100 is coming here​

Answer 1

Step-by-step explanation:

Its actually, in the question they gave, 8cm of standing water is needed.

SO HERE:

45,000=A×8/100

45,000 comes over A and there will be reciprocal between 8 and 100, so the 8 comes instead of 100 and 100 comes instead of 8 due to reciprocal.

45,000×8/100

=562500 m square.

I hope it helps u.