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
The sum of the areas of two circles with radius of 2cm and 3cm is: 3.14 * (2 * 2 + 3 * 3) = 3.14 * 13
The area of the circle with radius RCM is 3.14 * r * r
3.14*r*r=3.14*13
r*r=13
R = √ 13 (radical 13)
RELATED INFORMATIONS
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- 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=______ .
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