Help please thank you

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8