find the diameter of a circle whose circumference is equal to the sum of cirumference of circles with radii 10 cm, 12 cm and 18 cm .
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Circumference of 1st circle + circumference of 2nd circle = circumferential of final circle
Radius of final circle = 22 units
Diameter of final circle = 44 units
Radius of final circle = 22 units
Diameter of final circle = 44 units
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