A 3 centimeter diameter circle has an area of 7.068 cm2
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(3cm)2 x pi = 28.274 cm2
Use this formula: A = PI(r)2
Area of circle of radius 3cm is 3 x 3 x pi ie 9pi sqcm, approx 28.26cm2
pi*1.52 = 7.069 square cm rounded to 3 dp
54 cm2