It is known that the area of a big circle is the sum of the areas of two small circles. If the radius of the big circle is RCM and the radius of the two small circles are 2cm and 3cm respectively, the value of R is obtained

μ R ^ 2 = μ 9 + μ 4
R = root 13

RELATED INFORMATIONS

1. It is known that the area of a circle with radius RCM is equal to the sum of the areas of two circles with radius 2cm and 3cm=______ ．
2. It is known that the area of a circle with radius RCM is equal to the sum of the areas of two circles with radius 2cm and 3cm=______ ．
3. Cut an average of 16 parts of a circle to form an approximate rectangle. The circumference is 4cm longer than the original one
4. Cut a circle along the radius to form an approximate rectangle. The circumference of the rectangle is 6cm longer than that of the circle. What is the area of the circle?
5. Divide a circle into 16 equal parts to form an approximate rectangle. The circumference of the approximate rectangle is 16 cm longer than that of the circle. What is the area of the circle square centimetre?
6. A piece of rectangular paper, 8cm long and 6cm wide, is to cut the largest circle on the rectangular paper. The area of the circle is () cm A.28.26 B.113.04 C.50.24
7. Draw the largest circle in a rectangle 10cm long and 6cm wide. What is the area of the circle? Cut off the circle, how many square meters are left?
8. A piece of rectangular paper, 5cm long and 4cm wide, cut the largest circle in the rectangle, what is the area of the circle?
9. How many cm is the radius and circumference of the largest circle on a 10 cm long and 6 cm wide rectangular paper? If you subtract this circle, how many square centimeters is the remaining area?
10. The diameter of a circle is equal to the side length of a square. Comparing their area, the result is (). A. equal B. the area of a circle is larger C. the square has a large area
11. It is known that the area of a circle with radius RCM is the sum of the areas of two circles with radius 2cm and 3cm, and the value of R is obtained
12. For a circle with radius r, if the radius increases X and the area of the circle increases y, then the functional relationship between Y and X?
13. The area of a circle is 10 square centimeters. If its radius is doubled, the area of the circle will be 10 square centimeters______ Square centimeter
14. The radius of a circle is 15.84 cm shorter than its circumference. What is the diameter of the circle?
15. The radius of a circle is 15.84 cm longer than its circumference. What is the diameter of the circle? Answer the solution, another solution, 50 for the respondent Make a formula
16. The radius of a circle is 15.84 cm longer than its circumference. What is the area of the circle in square centimeters?
17. There is a ring, the radius of the inner circle is 6cm, the radius of the outer circle is 10cm, what is the area of the outer circle
18. The radius of the circle increased by 6cm from 3cm, and the area of the circle increased by () square centimeter A. 27πB. 36πC. 72πD. 9π
19. When the radius of a circle increases from 6 cm to 9 cm, the area of the circle increases ()
20. Find the area of the circle below. R = 5cm, d = 6dm, C = 15.7m