A circular sinkhole has a circumference of 75.36 meters. A week later, it has a circumference of 150.42 meters.
a. Estimate the diameter of the sinkhole each week.
The sinkhole is about ? meters the first week.
The sinkhole is about ? meters the second week.
b. How many times greater is the diameter of the sinkhole now compared to the previous week?
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