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In Questions 24–26, round all answers to the nearest centimeter or inch. Estimate to see if your answers are reasonable. Include labels.
- A bicycle wheel rolls 75 inches with one turn of the wheel. What is the diameter of the wheel to the nearest inch?
- It takes 30 fifth-graders, arms outstretched, to surround a Giant Sequoia tree. Estimate the tree's diameter. (Hint: An average fifth-grader's arm span is about 140 cm.)
- One wheel on Frank's chair has a diameter of 64 centimeters. If he goes to the store and back, a distance of 3000 meters, about how many turns does the wheel make?
