32"
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The diameter is twice as long as the radius. d = 2r The diameter is basically a line through the center of a circle while a radius is from the center to the circumference of a circle.
The diameter is always double the radius so in this case, it is 18cm
The radius would be 6 cm because the diameter is 2 times bigger than the radius.
12 cm A diameter is twice as long as the radius of a circle. D = 2r D = 2(6cm) = 12cm
The area is 201.1 square inches.