You see, this is correct. Method 1: 3. 14 × 6? - 3. 14×2?

=37.68 - 12.56

=25. 12(cm？ )

Method 2: 3. 14×( 6? - 2? )

=3. 14×8

=25. 12(cm？ )

And my math book also has a question like this (the first volume of grade six), which is exactly the same as my answer! I just watched it again today and told you!

I told you when I saw the adoption, because I didn't want you to know now, but you may already know. It doesn't matter, I just want to help others, not adopt!

Good luck!