4,2 giờ = 4,2 × 60 = 252 phút.

0,2 giờ = 0,2 × 60 = 12 phút.

Tên nước sau khi Hai Bà Trưng lên ngôi là: Lĩnh Nam

2 \(+\) 2 \(=\) 4.

Yesterday, I went to the cinema to watch Doraemon: Nobita’s New Adventure into the Underworld with my friends. The theater was packed with fans, both kids and adults. The movie was full of exciting adventures, as Doraemon, Nobita, and their friends traveled to a magical world to save the Earth from danger.I loved the funny moments, especially when Doraemon used his gadgets to help Nobita. The animation was colorful, and the story was touching, teaching us about friendship and bravery. After the movie, my friends and I talked about our favorite scenes while enjoying some snacks. It was a fantastic experience, and I can’t wait for the next Doraemon movie!

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π = 3.141592653589793...

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