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https://www.meritnation.com/ask-answer/question/the-diameter-of-front-and-rear-wheel-of-a-tractor-are-0-63m/mensuration/10144213
https://www.meritnation.com/ask-answer/question/the-diameter-of-front-and-rear-wheel-of-a-tractor-are-0-63m/mensuration/10144213