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Circumference of plate: 4.3*pi = 13.5 rounded to one decimal place
An ordinary dinner plate has a diametre of 32cm, which gives it a radius of 16cm a= pi * r2 a = 804 cm
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Someone who's finished their dinner
The circumference is 3.14 (Pi) times the diameter: 3.14 x 6 = 18.84in circumference. The area formula is: A= Pi × radius2 therefore: (3 x 3) x 3.14 = 28.26in2 area.