= 1200+900

=2 100 cm2

Because it says that as long as you stick it around, you don't have to stick it up and down, which is generally the case.

Crow question: The answer is obvious.

Direct: 5×6×6

=30×6

= 180{ cubic centimeter}

Well, I'm in grade five, too.

Huanggang small champion exercise book?

Oh, hehe.