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How to write 89 and 90 pages of classroom exercises in the first volume of mathematics in grade three?
The answers on pages 89 and 90 of the first volume of math classroom exercises in grade three are:

1, the circumference of the first question is 34 cm, and the circumference of the second question is 32 cm.

2. The second question Grandpa walked a circle along this meadow, walking 16 meters.

3. The third question, its circumference is 18 cm.

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