The radius of a circle is 5cm and the diameter is 5cm___ Cm, circumference is___ Cm, the area is___ cm2． | Math enthusiast | Mathematical art

The radius of a circle is 5cm and the diameter is 5cm_ Cm, circumference is_ Cm, the area is___ cm2．

Diameter: 5 × 2 = 10 (CM), perimeter: 2 × 3.14 × 5 = 31.4 (CM), area: 3.14 × 52 = 78.5 (cm2), so the answer is: 10; 31.4; 78.5

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