For circumference use C = 2πr because π is the ratio of Circumference to diameter and diameter is 2 x radius.
C = 2 x 3.142 x 9.5 cm ≈ 59.7 cm
Area of a circle is π x r² = 3.142 x (9.5 cm)² ≈ 283.6 cm²
The circumference of a circle with a radius of 9.5 centimeters is about 59.7 centimeters and the area of a circle with radius of 9,5 centimeters is about 283.6 centimeters.