Let the long side of a rectangle be 3 cm and the wide side be 2 cm.
3a×2a=300
Answer? =50
a=5√2
Long side =15 √ 2 ≈15×1.414 = 21.21cm.
Width =10 √ 2 ≈10×1.414 =14.
∵2 1.2 1>20
Can't quit
A: I don't agree with Xiao Ming that Yu Can Jr. can't cut out a piece of paper that meets the requirements.