The diameters of two circles with centre A and B are 16cm and 30cm respestively.If areas of a circle with centre C is equal to sum of areas of the other two circles,then the circumference of the circle with centre C is:
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Diameter of circle with centre A = 16cm
Radius(r) of circle with centre A = 8cm
Diameter of circle with centre B= 30cm
Radius(R) of circle with centre B = 15cm
Given that:
Area of Circle with centre C = Area of circle with centre ( A + B)
= πr² + πR²
= π {(8)² + (15)²}
= π { 64 + 225}
= 289π
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