64 pi ie just over 201 sq cm
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when trying to find squ. feet you have to find the area. the area of a circle is half of the diameter squared times pi half of the diamter is the radius therefore the area in squ. ft would be.. A = pi x r2
IF 16cm is EACH side, the answer is four (sides) times 16cm... so that's 64 cm.
16 cm*16 cm =256 cm2
Area of a circle = Pi * radius2
the area of the circle is increased by 400%