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mathmate
It is not reasonable, because we know by estimating that 29.4 × 8.6 is approximately (but less than) 30 * 9 = 270, which is way less than 2528.4.
choixongdong
No
Anriques's answer is not reasonable. Her answer is 10 times bigger the actual answer.
It's supposed to be:
29.4 × 8.6 = 252.84

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