Question 4 of Sample CSWP (Segment 1)

Hi all,

I attempted the sample exam of CSWP (Segment 1) and was able to get the first 3 question right, but the 4th one was incorrect. I tried my best rechecking each and every dimension but unable to find any mistakes. Would be grateful if you could point out my mistake. Attaching my file.

My Mass :13182.74 grams

Actual Mass: 13206.40 grams

I would also like to know if CSWP allows 1% tolerance for the answers?

Thank you

SolidworksParts And Features