No. The diameter of a circle (D) is twice the radius (r). Area = PI * r2 or PI*(D2/4)
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A sphere has less surface with the same diameter.
A surface area of 804.2 cm2
The surface area of a softball with a diameter of 12 is about 452.4 square units.
The curved surface area is 75.4cm2
The surface area of this cylinder is 2,111.15 square feet.