The area of a square is 15 square centimeters. Find the area of a circle

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• 1. The largest circle in a square has an area of 15.7 square centimeters. What's the area of the rest The clear explanation will be given tomorrow
• 2. Draw the largest circle in a square. If the area of the circle is 15.7 square centimeters, then the area of the square is () square centimeters? My sixth grade, do not list difficult formula, as long as the ordinary formula, thank you!
• 3. If the radius of a circle is Tai times, then the area of the circle is () square meters. Draw the largest circle in a square with a side length of 4 decimeters, and the circle is The diameter of yuan is (), the perimeter is () decimeter, and the area is () square decimeter A round flower bed with a diameter of 8 meters covers an area of ()
• 4. Cut out the largest circle from the square iron sheet with a side length of four decimeters. What is the area of this circle?
• 5. Cut out the largest circle from a square sheet of iron with a side length of 20 cm. What is the area of the remaining sheet of iron in the original square? Requirements: to calculate the formula, you must write the unit!
• 6. Cut out the largest circle from a square sheet of iron with a side length of 20 cm. What percentage of the area of the remaining sheet of iron is the area of the original square?
• 7. Cut the square sheet iron with side length of 4 decimeters into the largest circle, minus the area of the part ()
• 8. Cut a square sheet of iron with a side length of 4 decimeters into the largest circle, and the area of the cut part is half of the square area______ %．
• 9. Cut a circular sheet of iron with a radius of 2 decimeters into the largest square. What is the area of this square in square decimeters The process is to draw a square in a circle, not a circle in a square
• 10. Cut the largest circle in a square paper with a side length of 10 cm. What is the area of the circle______ Square centimeter, it takes up half of the square area______ %．
• 11. It is known that the area of a small square is 15 square centimeters, and the area of a circle is? One side of a square is the radius of a circle I hope the formula is easy to understand,
• 12. As shown in the figure, the area of the triangle is 15 square centimeters. The area of the whole circle is 15 square centimeters______ Square centimeter
• 13. Draw the largest circle in a square. It is known that the area of a square is 15 square centimeters. What is the area of a circle?
• 14. The area of a circle is 15.7 square centimeters. Draw a square with the largest area inside. How many square centimeters is this square?
• 15. Area and perimeter of circle in sixth grade
• 16. If there is a square lawn with an area of 160 hectares, how many meters is its perimeter?
• 17. A square, if its adjacent sides are increased by 6 cm, you can get a new square, the area of the new square is 120 square cm larger than the original square. Find the area of the original square
• 18. When the area of rectangle, square and circle is the same, what is the size relationship between their perimeter?
• 19. Judgment: a figure with an area of 1 square meter must be a square? First, the third grade did not learn decimal multiplication. Second, only learned the area of rectangles and squares
• 20. The area of a square is 20 square centimeters. Find the area of the largest circle in the square