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Cut a piece of 24 decimeter square paper into the largest circle. What is the circumference and area of the circle?
24 △ 4 = 6 (CM), circumference of the circle: 3.14 × 6 = 18.84 (CM), area of the circle: 3.14 × (6 △ 2) 2 = 3.14 × 9 = 28.26 (square cm); answer: circumference of the circle is 18.84 cm, area is 28.26 square cm
Draw the largest circle in a square with a circumference of 20 decimeters. How many decimeters is the circumference of the circle
The diameter of the circle = the side length of the square = 20 △ 4 = 5cm
The circumference of this circle is 3.14x5 = 15.7cm
Draw the largest circle in a rectangle 5 decimeters long and 3 decimeters wide. How many centimeters is the circumference of the circle?
emergency
The diameter of the circle = the width of the rectangle = 3 decimeters
The circumference of this circle = 3.14 × 3 = 9.42 (decimeter)
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