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Draw the largest circle in the positive and negative shape with a circumference of 24 decimeters. What is the circumference of the circle In 1997, an orange tree at Jiaxiang road home in Shandong county produced an orange. The perimeter of the cross section of the orange is 85CM. What is its radius?
Draw the largest circle in the positive and negative shape with a circumference of 24 decimeters. What is the circumference of the circle
Solution: the diameter of the largest circle is the side length of the square: 24 △ 4 = 6 decimeters
The circumference of the circle is: 6 × 3.14 = 18.84 decimeters
The perimeter of the cross section of this orange is 85 cm. What's its radius?
The radius is: 85 △ 3.14 △ 2 = 13.54 cm
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