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Ask a few math problems of the sixth grade Jiangsu Education Edition!
1， 10 ÷ 2 = 5cm 3. 14×5？ × 2+3.14×10×10 =157+314 = 628cm2 surface area.

Volume: 3. 14×5? × 10=785 cubic centimeters

2、3. 14× 10? × 10× 1/3

3. Is the cross section wrong?

4. 30×1/5 = 6cm 6÷ 2 = 3cm 3-1= 2cm.

3. 14×(3? -2? )×30×7.8

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